The other reason why cells stay together is that they're surrounded by a matrix that's called extracellular matrix.

另一个使细胞凝聚在一起的原因是,它们被,叫做细胞外基质的一种基质所包围

耶鲁公开课 - 生物医学工程探索课程节选

and it's about a girl surrounded by more or less caricatures,

讲的是一个女孩被漫画包围，

话剧排练结束后 - SpeakingMax英语口语达人

Here's the editor, great editor of the publisher Faber & Faber, thirty years later, or more, surrounded by books, ; the cultural arbiter of the English speaking world; T.S. Eliot at sixty.

0年后，这就是费伯-费伯出版社的大编辑，被成堆的书籍包围着，被视为英语语言世界的文化标尺;,这就是60岁的艾略特。

耶鲁公开课 - 现代诗歌课程节选

The opposite leaflet does the other thing, the water soluble part points down and the fat points up, so now you have thin region of fat which is surrounded on both sides by water.

相反的部位则有不同的情况,水溶性部分向下,而脂肪向上,所以现在就得到了,两侧均被水包围的薄层脂肪区域

耶鲁公开课 - 生物医学工程探索课程节选

One is, he can't afford to have his hoplite line outflanked, because if I can come around and take care of this guy from this side, he is engaged with a guy who's right opposite him, I can just kill him no problem at all.

一点是,他不能让方阵的侧翼被包围,因为如果我调转方向,从这边对付他,他正在和正面的敌人交战,我干掉他就是小菜一碟儿

耶鲁公开课 - 古希腊历史简介课程节选