They pitched a camp in the mountain.他们在山中扎营。The movement took him by surprise, and he pitched forward...这一动使他冷不防地向前摔倒。My foot caught in a creeper and I pitched forward.藤蔓缠住我的脚,使我向前倒下.THE khaki Bedouin tent was pitched ju...
The ear has a set of filaments to vibrate in resonance with incoming sound-waves.耳朵里有一组细丝能和进入的声波产生共振。Instead, sarcomere shortening occurs when the thin filaments'slide " by the thick filaments.此外, 肌节的缩短发生于细肌丝沿粗肌丝“滑行...