海南岛的地形中间高，四周低。

Hainan is high in the middle and low on all sides.

youdao

烤蛋糕的朋友经常遇到蛋糕四周低，中间高的问题。

A lot of people found their cake is low on the edge and high in the middle.

youdao

在有侧向保护器情况下，侧向散射照射量有所减小，在与光轴垂直方向呈中间高两边低的单峰分布。

With side cone the side scattered exposure is decreased, and the distribution becomes complicated with single-peak in the direction perpendicular to the axis.

youdao

But in terms of drugs that don't look like maybe this compound was used in the synthesis, many of them might have used thionyl chloride, because it generates such a nice reactive intermediate that you can go on and make a bunch of different compounds from that intermediate.

但是对于药物来说,它们可能跟合成过程中用到的这种化合物并不相像，很多药物的制造过程中都会用到亚硫酰氯，因为它能产生活性如此之高的反应中间体,以至于你可以继续利用反应中间体,来制造一堆不同类型的化合物。

麻省理工公开课 - 化学原理课程节选

Normally, when you have a dealer, the dealer has a-- when we talk in terms of price the dealer has an ask, which is higher than the bid.

一般来讲,当你和中间商交易的时候,如果以价格形式谈论,中间商的买入价,会比卖出价高

耶鲁公开课 - 金融市场课程节选

Is it high, middle or low? Where is it?

是高,中间,还是低,在哪里

耶鲁公开课 - 聆听音乐课程节选