有个段子说，龙虾什么时候最好用？答案是在UP主拍的视频里。
Static Friction Beats Kinetic FrictionTake a dining room chair and push it in circles around the room. If anybody asks, tell them it’s for science. You’ll soon get tired, because the floor resists this sliding motion. That is the kinetic friction force. The equation looks very similar to the one for static friction:，更多细节参见whatsapp
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Emitting terminatorsSame as before, simply for another immediate representation construct:
Sie haben bereits ein Digital-Abo?，这一点在wps中也有详细论述