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。

youdao

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。

youdao

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。

youdao

The disarmament of the country's former rebel factions, set to be completed two months before the vote, is also reported to be behind schedule.

VOA: standard.2009.09.29

I should tell you first of all that in this class, the taping is not going to affect you because the camera is going to be behind your head.

我想跟你们强调的是,录像将不会影响你们,因为摄像机在你身后

耶鲁公开课 - 基础物理课程节选

I liked the chance to be behind the camera. It was really cool.

我喜欢在镜头后面的机会。真的很酷。

体育相片的魅力 - SpeakingMax英语口语达人

Economic thinking, in fact, seems to be behind Bill Gates' current emphasis on vaccine research.

FORBES

Mr Taylor appears once again to be behind the scenes, funding two rebel groups there.

ECONOMIST: Endgame?

Looking ahead, the company said its bookings for 2013 "continue to be behind" this year's levels.

BBC: Carnival profits fall as Concordia crash impact remains