It's up in the air.
Math is beyond me.
我对数学无能为力。It slipped my mind.
我忘了。
You can't please everyone.
你不可能讨好每一个人。I'm working on it.
我正在努力。You bet!
当然！Drop me a line.
写封信给我。Are you pulling my leg?
你在开我玩笑吗？Sooner or later.
迟早会的。I'll keep my ears open.
我会留意的。It isn't much.
那是微不足道的。Neck and neck.
不分上下。I'm feeling under the weather.
我觉得不舒服/精神不好/情绪低落。Don't get me wrong.
不要误会我。I'm under a lot of pressure.
我压力很大。You're the boss.
听你的。What's this regarding?
这是关于哪方面的？Over my dead body!
休想！Can you give me a hand?
你能帮个忙吗？We have thirty minutes to kill.
我们有三十分钟空闲时间。Whatever you say.
随便你。It'll come to me.
我会想起来的。You name it!
你说出来。If I were in your shoes.
如果我是你的话。I will play it by ear .
我会见机行事的；到时候再说。You should take advantage of it.
你应该好好利用这个机会。Let's talk over coffee.
我们边喝边谈。Take it easy.
轻松一点；别紧张；放松放松；再见。I'm easy to please.
我很容易取悦/相处。Let's give him a big hand.
让我们热烈鼓掌。As far as I'm concerned.
就我而言。I'm all mixed up.
我全搞混了。Let's get together one of these days.
找一天聚聚。He's behind the times.
他落伍了/跟不上时代了。I'm pressed for time.
我时间紧迫。I'm up to my ears in work.
我忙死了。我心得不可开交。You can't do this to me.
你不能这么对我。Just to be on the safe side.
为了安全起见。I hope I didn't offend you.
希望没有冒犯你。It won't take much time.
不会花很长时间的。It's been a long time.
不会花很长时间的。It's nothing.
小事情；不足挂齿。It's a long story.
说来话长。It's about time.
时间差不多了。It's incredible.
难以置信！It's hard to say.
难说。I can't imagine why.
我想不通为什么。That can't be.
不可能。That's really something.
真了不起。Are you sure?
你确信吗？Are you crazy?
你疯了吗？Excuse me for a moment.
失陪一会儿。I mean it.
我是认真的。I'm serious.
我是认真的。I'm no kidding!
我是认真的。I'll consider this matter.
我会考虑这件事的。I'll do something about it.
我会想办法的。