It was still moving about so I reached down and touched it on the wing causing one of the pins to fall out.
它仍在舞动,所以我伸手去抓住它,触摸舞动着的它,而使一个直针脱落了下来。
LOOKING out from a window seat in the midsection of an airliner, you can see clearly that the wing is made up of many moving parts.
如果您乘坐的一架航班的座位正好位于客舱中段的靠窗位置,抬头向外观望,您就可以清楚地看到,机翼是由许多可以运动的部件所组成。
A plane flies because air flowing more slowly under its wing exerts more pressure than the faster-moving air flowing above.
飞机之所以能飞翔是因为机翼下方的气流缓慢,对机翼上方的快速流动的空气施加更多的压力。
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