The lock insurance of since the wide tooth, unlock the device pneumatically are safe and reliable .
宽齿自锁保险，气动开锁装置安全可靠。
Let me see. Open your mouth wide, please. The third molar (wisdom tooth) is badly decayed.
让我看一看，请把嘴巴张大。第三颗智齿蛀的很厉害。
He opened his mouth most unnecessarily wide; he certainly had not a tooth in his head.
他夸张地张大嘴巴，他嘴里确实没有一颗牙。
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