The Tapper: Tappers are generally quieter than Crackers. But that doesn't make them any less annoying when they're tap-tap-tapping on their personal communication devices during meetings.

按键发信者：轻声敲键盘的人要比吱吱作响者安静，但是这也不会让他们更讨人喜欢，因为他们在开会期间不停地操作自己的通讯设备。

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A pallet full of sheeting is placed at the loader end and a single sheet is picked up with a vacuum apparatus (equipped with a tapper and air-jetter).

整整一货板的板材放在装载装置的末端，单一的板材放在真空仪器上(配备了开孔器和空气喷洗器)。

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And even when struggling with more demanding tasks such as recalling information while pressing a tapper as fast as possible their scores fall well within the normal range.

即使在进行要求较高、较困难的活动中，例如回忆信息的同时尽可能快速地敲键，他们的得分正好属于正常范围内。

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The pilots - Flight Lieutenants Jonathan Tapper and Richard Cook - were said to be to blame but the conclusion has been strongly contested by their families and some politicians.

BBC: News | UK Politics | 'Pilot error' finding repeated

Stanton hit a tapper in front of the plate and clutched his leg just before crossing first base, fell face-first to the turf and then pounded the grass with his fist in anger.

WSJ: Marlins beat Mets 4-3 in 15 innings

Speaking on the programme this morning the president of the Planning Officers Society, Stephen Tapper, pointed out that greenbelt land around towns is already well protected, and questioned how such pricing mechanisms would work.

BBC: Putting a price on nature