Since the reform and opening-up, the diet of Chinese people has undergone significant changes. In the past, due to the backward economy, food was limited in variety and insufficient in quantity, so people were content with merely having enough to eat. Today, with China's economy developing rapidly, food is not only more abundant and diverse but also greatly improved in quality. As living standards keep rising, people have increasingly higher demands for their diet and pay more attention to eating in a nutritious and healthy way. Therefore, the low-fat, low-sugar and organic food launched on the market today is widely welcomed by people.
逐句译法
1. 改革开放以来，中国人的饮食(diet)发生了显著变化。
参考译法：Since the reform and opening-up, the diet of Chinese people has undergone significant changes.
主干：饮食发生变化（主语策略：原句主语）中文主语明确是"中国人的饮食"，谓语"发生了变化"，主干即 the diet of Chinese people has changed / Chinese people's diet has undergone changes。引 中国人的饮食(diet)发生了显著变化，把"饮食"提作主语、"发生变化"作谓语。
语法点：- 时态"自改革开放以来……发生了变化"是从过去持续到现在的结果，用现在完成时 has changed / has undergone，这与 since 引导的时间状语正好搭配；这是本篇唯一适合用完成时的地方，不必硬套全篇基调的一般现在时。 - 主谓一致主语 the diet（单数）或 Chinese people's diet 都是单数，谓语用 has，不要写成 have。 - 单复数"显著变化"指多方面变化，change 用复数 changes（undergo significant changes），或用 changed significantly 的动词写法。
降级处理：时间状语前置改革开放以来 是时间状语，降级成介词短语 Since the reform and opening-up 放句首；显著 是修饰"变化"的程度词，用形容词 significant 修饰 changes 或用副词 significantly，不要单独成句。本句主干清晰，只需把状语和修饰词安放好即可。
2. 过去由于经济落后，食品种类有限、数量不足 ，人们仅仅满足于吃得饱。
参考译法：In the past, due to the backward economy, food was limited in variety and insufficient in quantity, so people were content with merely having enough to eat.
主干：人们满足于吃饱（主语策略：原句主语）本句落脚在 人们仅仅满足于吃得饱，主干是 people were content with merely having enough to eat，主语 people、谓语 were content with。前半 食品种类有限、数量不足 是另一组主谓（食品作主语），整句可拆成"食品……不足"与"人们满足于……"两层。
语法点：- 时态本句明确讲 过去，偏离全篇一般现在时基调，整句用一般过去时：was limited、was insufficient、were content。这是全篇唯一整句用过去时的地方，与下一句"如今"的现在时形成今昔对比。 - 单复数与主谓一致food 作"食物"总称不可数，谓语用 was；people 是复数概念，谓语用 were content（不是 was）。 - 短语搭配"满足于"用 be content with / be satisfied with；"仅仅"用 merely / only 修饰；"吃得饱"译 having enough to eat 或 being able to eat their fill，不要直译成 eat full。
降级处理：原因状语加并列由于经济落后 是原因，降级成 due to the backward economy 介词短语；食品种类有限、数量不足 是两个并列描述，可处理成 food was limited in variety and insufficient in quantity，或用 with food limited in variety and insufficient in quantity 的 with 复合结构整体降级作背景，让主句聚焦"人们满足于吃饱"。
3. 如今中国经济快速发展，食品不仅更加丰富多样，质量也大幅提高。
参考译法：Today, with China's economy developing rapidly, food is not only more abundant and diverse but also greatly improved in quality.
主干：食品更丰富质量更高（主语策略：原句主语）本句两层：中国经济快速发展 与 食品不仅更加丰富多样，质量也大幅提高。落脚在食品，主干用"不仅……也……"结构：food is not only more abundant and diverse but also greatly improved in quality，主语 food、谓语 is。前半"经济快速发展"作背景。
语法点：- 时态回指全篇基调用一般现在时：develops / is developing、is not only... but also...，讲的是当下持续的状况。 - 程度词"更加"用比较级 more abundant / more diverse；"大幅提高"用 greatly / significantly improved，程度副词要跟上，体现"大幅"。 - 单复数与冠词food 作总称不可数、不加冠词不加 s；China's economy 特指中国经济，用所有格或 the economy of China。
降级处理：背景从句加not only如今中国经济快速发展 降级成 with China's economy developing rapidly 的 with 复合结构或 as 从句作背景；不仅更加丰富多样，质量也大幅提高 用 not only... but also... 关联结构串起两个并列表语，体现"递进"，避免用 and 平铺。
4. 随着生活水平不断提升，人们对饮食的要求越来越高，更加注重吃得营养健康。
参考译法：As living standards keep rising, people have increasingly higher demands for their diet and pay more attention to eating in a nutritious and healthy way.
主干：人们要求更高更重健康（主语策略：原句主语）主语是 people，两个并列谓语：对饮食的要求越来越高（have increasingly higher demands for their diet）与 更加注重吃得营养健康（pay more attention to eating nutritiously and healthily）。前半 随着生活水平不断提升 作背景状语。
语法点：- 时态回指全篇基调一般现在时：rise / keep rising、have、pay，讲的是当下持续趋势。 - 介词搭配"对……的要求"用 demands for；"注重"用 pay attention to / attach importance to，介词 to 后接名词或动名词，不接原形。 - 单复数living standards 习惯用复数；demands 表多方面要求用复数；their diet 用代词 their 承接 people，diet 不可数不加 s。 - 副词形式"营养健康"修饰"吃"这个动作，用副词 nutritiously and healthily，或用介词短语 in a nutritious and healthy way，不要用形容词直接修饰动词。
降级处理：随着译成with从句随着生活水平不断提升 降级成 As living standards keep rising / With the continuous improvement of living standards 作伴随状语；吃得营养健康 是"注重"的对象，降级成 pay attention to + 动名词 eating in a more nutritious and healthy way，不照中文硬译成 eat nutrition health。
5. 因此，目前市场上推出的低脂、低糖、有机食品受到人们的普遍欢迎。
参考译法：Therefore, the low-fat, low-sugar and organic food launched on the market today is widely welcomed by people.
主干：食品受到普遍欢迎（主语策略：转被动）低脂、低糖、有机食品受到人们的普遍欢迎，动作承受者"食品"作主语、用被动：low-fat, low-sugar and organic food is widely welcomed / is generally popular among people。把"受到欢迎"处理成被动正合英文习惯。
语法点：- 时态语态回指全篇基调一般现在时 + 被动语态：is widely welcomed / are generally popular，讲当下现状。 - 单复数与主谓一致low-fat, low-sugar and organic food 作总称视为不可数单数，谓语用 is；若理解为"各类食品"用 foods/products 则谓语用 are——本句两种处理都行，但主谓单复数务必一致。 - 短语搭配"受到普遍欢迎"用 be widely welcomed / be generally popular among people；"市场上"用 on the market；"因此"用 therefore / as a result 作过渡。
降级处理：推出的作后置定语目前市场上推出的 是修饰"食品"的定语，降级成过去分词短语 launched / available on the market 后置修饰 food，或用定语从句 that have been launched on the market；低脂、低糖、有机 三个并列形容词直接前置修饰 food。
词汇与译名提示
改革开放改革开放 是有约定俗成英译的政治经济术语，统一译作 the reform and opening-up；"改革开放以来"用 since the reform and opening-up，全篇只用这一种译法，不要一会儿 reform and open，一会儿 the open policy。