1.at risk 處于危險(xiǎn)中
Your child is at risk of getting one of these infections while waiting for the next injection.
你的孩子在等待下一次接種的時(shí)候，就會(huì)有感染這些傳染病的危險(xiǎn)。

2.last for 持續(xù)；延續(xù)
Then the strike will last for ever.
那么這場(chǎng)罷工會(huì)永遠(yuǎn)持續(xù)下去的。

3.arrive on the scene 露面；登場(chǎng)
Wyatt is about to shoot Mahone when police arrive on the scene.
懷亞特正想拔槍射向馬宏時(shí)，警察到達(dá)了現(xiàn)場(chǎng)。

4.prey upon of 掠奪；捕食
Baboons most often form close bonds with relatives, the researchers said, and the stability of those connections is partly a matter of luck since lions and leopards often prey upon baboons.
研究者表示，狒狒通常會(huì)與親屬建立親密的關(guān)系，不過由于獅子和豹子的捕食，使得這種關(guān)系的穩(wěn)定性含有一定的運(yùn)氣成分。

來源:可可英語 http://www.ccdyzl.cn/Article/201611/479303.shtml