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1·The leaves start off green but turn red later.

树叶起先是绿色，到后来会变红。《牛津词典》

2·Children's faces all turn red.

孩子们的脸变红了。

3·Maple leaves turn red in autumn.

枫叶在秋天变红了。

4·I am so afraid of speaking in the public that I would turn red whenever I appear on a stage.

我非常害怕在公众场合说话，以至于每次我站上台，我的脸都会变红。

5·If you are looking at your phone while walking, you might not see a car come or traffic lights turn red.

如果你边走边看手机，你可能看不到车辆开过来或交通灯变红。

6·Even if you had never suspected that this is what was going on when leaves turn red, there are clues out there.

即使你从未怀疑过这就是树叶变红时的情况，它还是有迹可循的。

7·I am afraid I would look silly if I forget a word or say something stupid or if I shake or turn red.

我害怕如果忘词了或说了一些愚蠢的话，或者如果我声音颤抖或脸红，会显得很傻。

8·Maple trees turn red in autumn.

枫叶在秋天变红了。

9·Does it turn red when cooked?

它会不会也变成红色？

10·The sky began to turn red.

天空开始转红了。