用在衬衣的袖口上的一对连接的纽扣之一。
One of a pair of linked buttons used in the cuffs of a shirt.
一对连接到印刷电路板上的导线把桥式整流电路与电源相连。
A pair of wires connected to the printed circuit board connect the bridge rectifier to a power supply.
对龙翼的描述基本上有两种-一对连接在脊椎上的第三肢，或者是蹼状的前肢。
Dragon wings are usually depicted in one of two ways-a third pair of limbs connected to the backbone, or webbed forearms.
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