lookup instruction

例句：

1. 1. I'll lookup the address on my phone.
   我将在手机里查找地址。
2. 2. The police are looking for the missing child.
   警方正在寻找失踪的孩子。
3. 3.She lookup her friend's phone number before calling.
   她先查了她的朋友的电话再打电话。