The computer receives a command when the user clenches his or her teeth for about one second — which differentiates the action from other activities such as chewing gum and talking.

当人们咬紧牙约一秒钟时，微型计算机就能接收到一个指令。而这里所说的咬紧牙与嚼口香糖和说话等活动是不同的。

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That prompted the launch of other products, such as blueberry - flavored chewing gum.

这也推动了其他蓝莓产品的推出，比如蓝莓味的口香糖。

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Avoid activities that result in swallowing excess air, such as smoking, eating quickly, chewing gum, and drinking carbonated beverages.

避免摄入过量空气的活动，如抽烟、快速进食、嚼口香糖和饮用碳酸饮料。

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Many Yale professors and alumni feel that Singapore with a longstanding reputation for limiting speech and heavily regulating behavior, such as with its famous chewing-gum ban is not the right fit for a college bearing the institution's name.

WSJ: Yale's Singapore Joint Venture Taps a President