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1·A child's vocabulary expands through reading.

孩子的词汇量通过阅读得到扩大。《牛津词典》

2·When matter is heated, it expands.

物体受热则膨胀。《新英汉大辞典》

3·This factory expands to the riverside.

这个工厂的地界扩展到河边。《新英汉大辞典》

4·We remove a pebble and the system expands.

我们移开一粒小石子，系统就扩展。

5·The new baby expands the zoo's elephant herd to six.

小象出生后，动物园的象群扩大到了6只。

6·If the muscle's contract, then the sack expands, and you can see the colors.

如果肌肉收缩，色袋就会膨胀，你就会看到不同的颜色。

7·Peter the Great expands territory beyond the Euro mountains along the Caspian Sea at the expense of the Turks.

彼得大帝越过欧洲山脉，沿着里海扩张领土，牺牲了土耳其人的利益。

8·When it's raining, the normal customer base for rickshaw pullers expands greatly, as does the price of a journey.

下雨的时候，人力车车夫的客户群会大大扩大，旅程的价格也会随之上涨。

9·If metal gets hot it expands.

金属受热就膨胀。《牛津词典》

10·The waist expands to fit all sizes.

腰围可松可紧适合任何尺码。《牛津词典》

(1)expand market开拓市场

(1)expand into扩大为

(1)expand domestic demand扩大内需

(1)expand on详述

(1)expand all全部展开；显示所有文件；扩展所有的