1·If you gradually move your tongue forward towards the th-sound, stopping halfway, your tongue will be behind your teeth, and the pitch will get higher.
假如你渐渐将舌头前移向发 th 声所在的位置，然后半路停下，你的舌头会停在你的牙后，同时音调会升高。
2·The worst may be behind them now, but the shocking losses of the past few years have reshaped nearly every facet of their lives—how they live, work, and spend—even the way they think about the future.
最糟糕的情况可能已经过去，但过去几年令人震惊的损失几乎改变了他们生活的方方面面，包括他们的生活、工作和消费方式，甚至他们对未来的看法。
3·France's high labor costs seem to be behind the drop off in exports.
法国的劳动力成本高，似乎是出口下降背后的原因。
4·Personally, I think a clever monkey could be behind the whole thing.
我个人认为，这整件事情的背后很可能是由一个聪明的猴子在幕后策划的。
5·Investors themselves may actually be behind the rise in fees, however.
然而，投资者自己也许落后于上涨的费用。
6·Dehydration or a medication side effect may be behind a hallucination.
她的脱水或药物副作用可能给她留下一个幻觉。
7·Soon thepast would be behind them and England would become their present.
过去很快就会被抛在身后，而英格兰将会成为他们的现在。
8·Police are believed to be behind pamphlets recently circulated in cities.
人们相信最近在很多城市散发的传单里都有警察的影子。
9·From our vantage point, a second galaxy happens to be behind the first galaxy.
从我们所在最佳位置看过去，在第一个星系的后面就能看到第二个星系。
10·In fact, he is pointing at a cardinal direction that happens to be behind his back.
事实上，他所指的是一个恰好在他身后的主方向而已。