For large, extended chords thrust is preferable to free fall. 用推力動(dòng)作彈奏伸展的大和弦優(yōu)于自由下落動(dòng)作。
Einstein realized that a person falling to the earth does not feel the effect of gravity, just like astronauts in space. 愛(ài)因斯坦認識到在地球上自由下落的人就像太空中的宇航員一樣感覺(jué)不到地心引力的作用。