keep good time nghĩa là gì

• (xem) keep

• keep     to keep abreast of (with) to keep good time to keep one's legs to keep open...
• good     [gud] tính từ better, best tốt, hay, tuyệt very good! rất tốt!...
• time     [taim] danh từ thời gian, thì giờ to lose time mất thì giờ...

• Nothing is wrong with either of their clocks, neither clock runs slow.
  Neither clocks keeps good time: cả hai cái đồng hồ chả cái nào chạy đúng cả.