The gang thought of hitting him too, but decided just to spit.那伙人也想过要揍他，但最后只是啐了他一口。Notices in the waiting room requested that you neither smoke nor spit.候车室的公告牌要求人们不要吸烟和随地吐痰。She roasted the meat on a spit.她用烤肉叉子烤肉。...
它的振动幅度取决于引力场的强度。Its oscillation depends on the strength of the gravitational field.振动幅度的大小决定声音的大小.The amplitude of the vibration determines the loudness of the sound.膜片振动,这使得周围的空气也动荡起来.The diaphragm vibrates , thus setti...
What does the theory of plate tectonics maintain?这板块构造学说的理论讲些什么?Geologists describe the motion of the plates and the consequences of such motion as plate tectonics.地质学家把板块运动及这种运动所造成的后果看作是板块构造运动.The idea of sea - floor sp...