This creates a trough either side of your head and body that is beneath the surface level of the pool - so there's air lower than you might expect there to be.

这将在你的身体和头部两侧制造一个凹槽，它位于游池水面的下方-因此在你比你期望更低的位置有空气存在。

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Thirdly, the northern scope of the Ting Jia fracture is only division in the southwest of the Nansha trough. But the south of it extends to the south side of the island of Kalimantan.

然而廷贾断裂的范围其北端的位置只划分在南沙海槽的西南端，而南侧延伸到加里曼丹岛上。

youdao

Objective to investigate the hypotensive effect, tolerance, trough to peak ratio and side-effect of lacidipine on the patients with essential hypertension.

目的观察拉西地平的降压效应、耐受性、谷峰比值及不良反应。

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The true test of whether Groupon CEO Andrew Mason and his executives can write a different script will be whether they can cross this trough of disappointment and come out intact on the other side.

FORBES: Is This Groupon's Webvan Moment?