You must get there by all means before dark.
你们一定要在天黑以前到达那里。

Do it, by all means, but strictly on the quiet.
这件事一定要干， 不过要严守秘密。

If you enjoy reading, then by all means do that whenever you want.
如果你喜欢阅读，不管什么时候，都要想尽一切办法去读。

2. propose a toast: 祝酒

Now, I propose a toast for the New Year. Cheers!
现在我提议大家举杯，干杯!

And may I propose a toast to all of you and to the National Day of China!
让我们共同举杯，为各位嘉宾和中国的国庆干杯！

Everybody, I'd like to propose a toast to Mary Johnson, Teacher of the Year.
各位，我提议大家为"年度最佳教师"玛丽·约翰逊敬一杯酒。

3. here’s to 为……而尽一杯

Here's to our friendly cooperation.
为我们的友好合作干杯。

Here’s to the crazy ones.
给那些疯狂的人。

Sam: Heres to the best news show in America.
山姆： 为美国最好的新闻节目干杯。