One small example is "beeping" : hanging up after a single ring.
一个小例子就是“传呼”：响一下后挂掉。
On back of board, nail in ring hangers and tie on hanging wire.
木板背后钉入三角环悬挂架，用不锈钢吊索固定。
But today, you can buy a 16gb-sized USB memory stick hanging on a key ring.
但在今天，你可以买一个16gb大小的US B存储棒挂在钥匙环上。
But today, you can buy a 16gb-sized USB memory stick hanging on a key ring.
但在今天，你可以买一个16gb大小的US B存储棒挂在钥匙环上。
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