同意，只要符合造词规律，或约定俗成就可以

be headed
Where are you headed next?
你接下来去哪里？
＝be going

in for
Now you’re in for a treat.
现在你要享受招待了
＝Guaranteed to get确定将得到

in the dark
I am as much in the dark as you are!
我跟你一样蒙在鼓里
=lacking knowledge 蒙在鼓里

回复：44楼
谢谢鼓励！

in the middle of things
Could I talk to you for a minute about the discrepancy I've found in this graph?
我能跟你谈会儿我在这张图上发现的差错吗？
—I'm kind of in the middle of things right now.
—我这会儿有点儿忙。
＝正忙着

on sale
I just saw an ad on television that said men's suits were on sale today and tomorrow.
我刚在电视上看到一则广告，说男士服装今明两天搞减价促销
＝大减价

on reserve
This table is on reserve.
这桌已预留给别人了
＝预留

out of earshot
Hey, John. John.
喂，约翰，约翰
—Save your breath! He’s out of earshot.
省口气吧！距离太远，他听不见。
＝超出能听到的距离

be on the right track
You are on the right track. I just think you need to narrow the topic down.
你大方向正确，我只是觉得你有必要缩小论题范围。
＝在正确的轨道上，方向正确

be on to something
How's your work going?
你的作业怎么样了？
—I think this time I am really on to something.
—我觉得这次摸到门道了
=认识到重要意义，会产生重要结果

kick ass!
hot shit!
More to add to it.

be out of it
Pete's really out of it these days.
皮特这些天真是魂不守舍
Yeah, I know. Ever since he met Ann, he's been in another world.
可不是。自从认识了安，他就像活在另一个世界里
＝魂不守舍

be out of one’s mind
He's got to be out of his mind.
他一定是疯了
＝失去理智.