The maths problem is too difficult for me to work out．

汉译英．

－你说英语还是说法语?

－很抱歉，这两种语言我都不会说。

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Some of the insects do noting to either help or harm us．

There are two ways of rising in the world, either by your own industry or by the folly of others．

Either you must improve your work or I shall dismiss you．

英汉互译．

You must not sacrifice your study for pleasure．

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英汉互译．

我作出重大牺牲，把弟弟送去美国进修。

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英汉互译．

他为救小孩而献出了自己的生命。

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She has sacrificed herself to her husband’s interest．

Parents often make sacrifices for their children．