midst
/mɪdst; mɪdst/ n
(used after a prep 用於介词之後) middle part 中部; 中央; 中间
in the midst of the crowd 在人群中间
A fox darted out of the midst of the thicket. 一只狐狸从灌木丛中窜了出来.
There is a thief in our/your/their midst, ie among or with us, you, etc. 我们[你们/他们]中间有个小偷.