hit off the table

基本解释

"If we see that hit U. S. investor confidence, and that hits equities, all bets are off the table for China to appreciate the currency, " he says.
他说，如果美国投资者信心因此受到打击，股市受到打击，那么就无法指望中国允许人民币升值了。

Imagine I have a little lamp, a little goose- one of those little gooseneck lamps, I'd put it on the table here, I'd put the height about a f-- about a foot off the table. And if I was really good, - I could hit, or time it so that when I hurt- yeah, try again. When I turn this on switch on in the lamp, at exactly the same time, I'm going to hit a key on my computer and start it running.
想象下我有一个那种小雁颈台灯-,我把它放在桌子上，大概离桌子，有一英尺那么高吧,这样挺好的，我可以打开-,或者关闭这灯,并在这同时，我可以让我电脑,开始运行。
麻省理工公开课 - 计算机科学及编程导论课程节选