画面上有个人用气笔给抹掉了。

Somebody had been airbrushed out of the picture.

《牛津词典》

你必须将气柱分解为很多不同的层，拿出你的纸和笔，计算在每一层的情况。

You have to divide the column of air into a set of levels, get out your pencil or computer, and calculate what happens at each level.

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我本来会重视上周小赚一笔的机会，但上周五的下挫实际上让我松了一口气。

While I would have appreciated the opportunity to raise a little cash last week, Friday's drop actually came as something of a relief.

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