英语里喝酒干杯是什么，随意又是什么

cheers是最普遍的用法"干杯"
bottom up
adv.
颠倒, <俗>干杯！

另外:

drink to/toast也是干杯的意思

干杯是cheers
随意是enjoy yourself

干杯:
1. to drink a toast
2. to propose a toast
3. here's to
4. cheers
Relative explainations:
<toast> <drink to> <skoal> <Bottoms up>

Examples:
1. 我提议为我们的友谊干杯。
I wish to propose a toast to our friendship.
2. 我们要为新娘的健康干杯。
We must drink to the health of the bride.
3. 我要为此干杯。
I'll drink to that.
4. 让我为你的健康干杯。
Let me drink to your health.

干杯
drink supernaculum
干杯
drained the cup.
干杯
Bottoms up
干杯！
Toast!
干杯！
Here's mud in your eye!
干杯！
Here's how!
干杯！
Cheer!
干杯！
Bottoms up!
干杯，祝酒
To propose as a toast.
我干杯。
I make a toast.

随意是:take it easy 吗?不确定...