三环（Sanhuan）打击乐器，由3个铁环组成，用于乐器合奏或歌舞伴奏。
当然，那将是小丑，一个恶魔般的三环马戏团人物，被希斯·莱杰完全地发挥出来。
That would be the Joker, of course, a demonic creation and the three-ring circus of one wholly inhabited by Heath Ledger.
B如果你开车的话，沿着三环往北开。
B If you are driving, go round the Third Ring Road and head north.
三环类抗抑郁剂也能导致如下副作用。
Tricyclic antidepressants also can cause side effects including.
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