pero 用英语:

Thanks, but no thanks.

There are several good protections against temptation, but the surest is cowardice.

It's only a small house but it meets my needs perfectly.

But of course that was a long time ago.

But what will you do if he doesn't come?

Irene Pepperberg, a researcher at Northwestern University, is discovering that a parrot can not only mimic people but also learn the meaning of words.

I may seem confident, but I get extremely nervous speaking in front of people. My hands tremble, I get all tongue-tied, and sometimes I don't even know what I'm saying myself.

After that, I left, but then I realized that I forgot my backpack at their house.

Prime numbers are like life; they are completely logical, but impossible to find the rules for, even if you spend all your time thinking about it.

He puts on a show of being impartial and unbiased, but I think he's just a guy with no opinion of his own.

It may seem like just a little thing to you, but Tom is really worried about the whole thing.

He promised to bring new industries to the region, but politicians rarely keep their word.

It was very cold last night, so we didn't go outside, but stayed indoors.

Cats are like girls. If they talk to you it's great, but if you try to talk to them, it doesn't go so well.

My friend recommended that I shouldn't buy an iPad yet, but to wait until I see what Apple's competitors come out with.