check in托运（行李）；（为…）办理入住手续；（为…）办理挂号手续；（在机场）办理登机手续，检票登机
Is there a place we can check in our bags?
有存包的地方吗？
You go and check in while I pay the taxi driver money.
你去登记，我付出租汽车司机钱。
If you want to stay at a hotel, you have to check in.
你想住旅馆，就得办理登记手续。
水利万物而不争,
而万物莫能与之争。
