inprep.在 ... 里；在 ... 地方；在 ... 期间；在 ... 方面；进入...里面；处于...状态；穿着...；以...的方式adv.在家；入；进；向里；在某地；并入；在某种关系中adj.在里面的；新来的；执政的；<口>时髦的n.当权者；影响；达成目标的路径initive出游偏好

1. I've known him ever since he was in petticoats.
   还在幼年时我就认识他。
2. It is safe to say that the revolution is only in its infancy.
   可以肯定地说这场革命还处于它的幼年时期。