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要点 单词up-to-date是由短语up to date合成而来，也可以表示“最新的”，比如：up-to-date products（最新的产品）。
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upgrade［ˌʌp’greid］n. 向上的斜坡 v. 提高…的级别或等级
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例句 1. I advocate the building of a modern library which can provide a good environment for local people to study and upgrade themselves. 我提倡建立一座现代化的图书馆，为当地的人们提供一个学习和提升自我的优良环境。
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2. Maybe all of us need to upgrade ourselves to be adapted to this rapid-changing society. 也许我们每个人都应该提升自己，以适应这个飞速变化的社会。
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例句 1. The hybrid cars that utilize renewable resources make them particularly attractive for their environmentally-friendly property. 使用可再生能源的混合动力车因其环保的特性而备受关注。
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2. The nutrient substances in food can be taken in and utilized by our body. 食物中的营养成分会被身体吸收并利用。
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3. I want to find a job that would fully utilize my professional knowledge. 我希望找到一份能充分发挥我的专业知识的工作。
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variety［və’raiəti］n. 品种，种类；多样化
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例句 1. We all have received a variety of presents, but some of them may make us recall the nice memories. 我们每个人都收到过各种各样的礼物，而其中的一些礼物能让我们想起美好的回忆。
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2. I prefer television programs that contain an enormous variety of forms and content. 我喜欢那些形式和内容丰富的电视节目。
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要点 形容词various也可以表达“多种多样的”，意思和用法相当于a variety of。
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例句 1. With the constantly growing number of automobiles throughout the world, the problem of congestion becomes worse and worse for the planners and engineers failed to find a solution to deal with the increasing volume of traffic growth. 随着全球范围内汽车数量的不断增长，由于规划者和工程师们无法找到一个能够应对汽车增长数量的方法，拥堵问题变得日益严重。
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2. The first publication of Joyce was a volume of short fiction. 乔伊斯第一次出版的作品是一卷短篇小说。
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同义 capacity（n. 容量）
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要点 amount和volume都可以表示数量，但区别是amount常表示数目，而volume则是比较笼统的量，比如：operation volume（业务量）。
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托福写作1000词 文体娱乐篇
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addict［‘ædikt］n. 有瘾的人，入迷的人［ə’dikt］v. 使成瘾，使入迷
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例句 1. We are so addicted to all of what they said that we are not able to think on our own. 我们太沉溺于他们的说法，以至于无法按照自己的意愿思考。
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2. I can’t deny that some people have ignored their friends and family while they are addicted into watching TV. 我无法否认的是一些人沉溺于电视节目，而忽略了朋友和家人。
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3. There are many medical reports warning people that depending on fast food is unhealthy, and there is a high prevalence of malnutrition among those who are addicted to burgers and cola. 许多医学报告都警告人们依赖快餐是不健康的，而且在那些对汉堡和可乐上瘾的人们中，营养失调症的情况十分常见。
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派生 addictive（a. 使人上瘾的）；addiction（n. 上瘾，沉溺）
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