1.packs of 大量的;成群的
Condors wheeled overhead. Packs of wild llama were dotted around, heads popping up like periscopes at the sound of my approaching bike.
秃鹰在头顶上盘旋,四周有成群的野骆驼,伸出头来像一架架潜望镜侦听着我摩托车越来越近的引擎声。
2.be after 寻求;追赶
I know what you are after.
我知道你在追求什么。
3.be separated from 与...分开
The Animal is part of the nature and cannot be separated from human. Human must keep the ecology balance if he wants a happy life.
动物是自然的一部分,与人不能分离,人类要生活好,必须保持生态平衡。