be my guest
If you say be my guest to someone, you are giving them permission to do something.
If anybody wants to work on this, be my guest.
如果有人想做这件事的话,请便吧。
guests
A guest is someone who is visiting you or is at an event because you have invited them.
She was a guest at the wedding.
她是参加婚礼的客人。
A guest is someone who visits a place or organization or appears on a radio or television show because they have been invited to do so.
a frequent chat show guest.
一位经常参加访谈节目的特邀嘉宾。
Dr Gerald Jeffers is the guest speaker.
杰拉尔德·杰弗斯博士是特邀演讲人。
A guest is someone who is staying in a hotel.
I was the only hotel guest.
我是旅馆唯一的客人。