on the dot A dot is seen as a very small target. It is like hitting the very center of a dart board or the bulls-eye. When it refers to time, it means exactly that time not a minute after or before. “一点”是一个小目标。这就像击打飞镖板或靶子的中心。指时间时，意味着恰好在某个时间。 The plane landed at two o'clock on the dot. 飞机两点钟准时降落。 She came promptly on the dot of eleven. 11点整她准时赶了过来。