The test consists of placing the bottom of a foot in water, then stepping on a paper bag or some other object that will show how high or flat a person's arch is.
测试要先把脚底浸湿，然后踩在纸袋或其它可以显示你足弓高度的物体上。
Placing his palms flat on the polished parquet, he lay on his stomach and pulled himself forward.
他把手掌平放在光滑的嵌木拼花地板上，肚子趴上去，使劲往前挪。
This paper discusses different design methods of high speed air-driven turbine with nozzles placing in tilt or flat on its side.
本文论述了喷咀斜放和平放在涡轮侧面时，变形冲动式高速气动涡轮的不同设计方法。
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