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1·Each time he does a loop, he clucks twice.

先巡游一次，然后再转回来两次。

2·A hen clucks lougly after it has laid an egg.

一只母鸡下蛋后就咯咯叫。

3·Once the modem's screeches, clucks and beeps ended and I was connected to AOL's servers, all my friends would be right there, ready to chat.

一旦调制解调器发出刺耳的哔哔声，我就连上了美国在线(AOL)的服务器，我所有的朋友都会在那儿，做好了聊天的准备。