1.drinking water 饮用水

例句：What about plutonium in the drinking water?

钚会不会存在于饮用水里呢？

2.winter storm 暴风雪

例句：The winter storm has whited out the highway here.

冬天的暴风雪使人无法看清此地白茫茫的公路。

3.ahead of 在…之前

例句：Let's cut through the woods and get ahead of them.

咱们穿过树林抄近路赶到他们前面去。

4.promise to 许诺

例句：She broke her promise to me.

她没有承担对我的许诺。