受过重击的牙齿可能会变色。A tooth which has been hit hard may discolour.有些昆虫可以变色.Some insects can change colour.风云变色.The current political situation is changeable....
The sound track did not synchronize with the action.声迹与动作不同步。The film does not synchronize with sound.该影片画面与声音不同步.The sound on a film must synchronize with the action.影片中的声音必须与动作配合一致.Synchronize your watches.把你们的表校到同一时间。...