If you describe something as welcome, you mean that people wanted it and are happy that it has occurred.
Any progress in reducing chemical weapons is welcome.
任何削减化学武器的进展都是受欢迎的。
If you say that someone is welcome in a particular place, you are encouraging them to go there by telling them that they will be liked and accepted.
New members are always welcome.
欢迎新成员加入。
If you tell someone that they are welcome to do something, you are encouraging them to do it by telling them that they are allowed to do it.
You are welcome to visit the hospital at any time.
你可随时来医院参观。
If you say that someone is welcome to something, you mean that you do not want it yourself because you do not like it and you are very willing for them to have it.
If women want to take on the business world they are welcome to it as far as I'm concerned.
就我而言,如果妇女想在商界有所发展,尽管放马过来。
You use welcome in expressions such as welcome home, welcome to Boston, and welcome back when you are greeting someone who has just arrived somewhere.
Welcome to Washington.
欢迎来到华盛顿。
You say 'You're welcome' to someone who has thanked you for something in order to acknowledge their thanks in a polite way.
'Thank you for the information.'—'You're welcome.'
“谢谢你提供的信息。” “不客气。”
welcomes
A welcome is the act of greeting someone when they arrive somewhere.
There would be a fantastic welcome awaiting him back here.
迎接他回家的是一场热烈的欢迎仪式。
The welcome an action, decision, or situation is given is the way people react to it.
Environmental groups have given a guarded welcome to the prime minister's proposal.
环保组织对首相的提议表示欢迎但仍持保留意见。
make someone welcome
If you make someone welcome or make them feel welcome, you make them feel happy and accepted in a new place.
Here are six Mexican hotels where children are made to feel welcome.
这里有6家墨西哥旅馆,孩子们觉得在那儿受到了款待。
welcomes , welcoming , welcomed
If you welcome someone, you greet them in a friendly way when they arrive somewhere.
Several people came by to welcome me.
几个人走过来欢迎我。
She was there to welcome him home from war.
她在那里迎接他从战场回家。
a welcoming speech.
欢迎辞。
If you welcome an action, decision, or situation, you approve of it and are pleased that it has occurred.
She welcomed this move but said that overall the changes didn't go far enough.
她欣然接受了这一举措,但又说总体上改变还不彻底。
If you say that you welcome certain people or actions, you are inviting and encouraging people to do something, for example, to come to a particular place.
We would welcome your views about the survey.
我们欢迎你们对这项调查提出意见。