Well, for one thing, he's my sister's boyfriend. Ann talks about Jack all the time.
首先,他是我妹妹的男朋友。安整天就是杰克长杰克短的。
Try not to be so timid when you speak.
你讲话的时候不要那么紧张。
The Native Americans caught and trained them and were then able to use them to carry their goods when they travelled from one camping ground to another.