The rats had been conditioned to ring a bell when they wanted food.
这些老鼠已经过训练，想吃食物时就会按铃。
This often proves difficult and can take a long time so I will ring a bell so that everyone knows it's time to eat! Hopefully this will speed things up a bit.
事实证明这很困难并可能需要很长时间，所以我会提醒每个人，是时候吃东西了！希望能加快速度。
THEY rarely ring a bell at the bottom of bear markets.
熊市的底部几乎总是悄无声息地来临。
Men can ring a bell to quit at any time, and two out of three do so.
如果不能忍受，可以随时摇铃退出，事实上三分之二的人会这样做。
这个名字是否让你想起点什么？
你听到过这个名字吗？
有没有帮你想起一些什么呢？
It didn't ring a bell, so I asked her to explain.
我一时没有反应过来，便请她解释一下。
Sorry. That name doesn't ring a bell. It was so long ago.
很抱歉，我对那个名字没有印象，实在是太久了。
There is no sign on the door and you ring a bell to get in.
门上没有招牌，按门铃后，有人给你开门。
I don't know the person you mention, though the name seems to ring a bell.
你提到这个人我并不认识，但名字听起来似乎耳熟。
Justin told me I've met his sister before, but her name doesn't ring a bell.
贾斯汀告诉我，我之前曾见过他的姐妹，但是我对她的名字没有印象。
Does the name ring a bell?No, I'm sorry, that description doesnt ring any bells with me.
你听这个名字耳熟吗？不熟悉，抱歉，我一点也想不起来。
Does the name ring a bell? No, I'm sorry, that description doesn't ring any bells with me.
这个名字听起来很熟悉？很抱歉，我一点印象都没有。
Bruce Tognazzini is probably not a name that most of you are familiar with, but his associations might ring a bell.
可能BruceTognazzini这个名字听起来并不怎么耳熟，但是他所在的组织你却很可能听说过。
Ask any woman who is trying to do it all and she'll admit to a few slip-ups in the memory department (forgotten appointments, lost keys, missing cell phone-ring a bell?)
问问任何一个想把所有事都办好的女人，她都会承认在记忆方面会出些小小失误(被忘记的约会、丢了的钥匙、失踪的手机——是不是对你敲响警钟了？)
敲响警钟了？
敲响警钟了？
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