请先的英文：
after you

参考例句：

Please knock double knocks at the door before entering.
请先敲两下门再进来。

Please knock before you enter
请先敲门

Please unveil the label firstly.
请先揭开标签。

Please marshal the assets first.
请先排列债权人的顺序 。

Please knock on [at] the door before entering.
进来前请先敲门。

Please consult the card catalogue first.
请先查找卡片目录。

Please hang up and wait. I'll call you back in just a moment.
请先挂上，我一会儿叫你。

Would you please fill out this leasing application first?
请先填写这份租赁申请。

Domain you are trying to remove has domain alias! First remove them !
您要删除的域名拥有别名记录！请先删除它们！

Please exit out of Netscape Communicator in order to run the Profile Manager.
为了运行"简要表管理器"，请先退出"Netscape通信器"。

after是什么意思：
prep. 在…以后；在…后面；低于；模仿；尽管
conj. 在…之后
adv. 以后，之后；在后面，随后
adj. 以后的，后部的

After you, sir.
先生，您先。

Counsel after action is like rain after harvest
放马后炮

pattern oneself after
模仿样子

Look after yourself, bye!
自己当心点。 再见！

After the storm the sky cleared.
暴风雨过后，天空明朗了。

you是什么意思：
pron. 你，您；你们，您们；各位，大家