直接黑9 Direct Black

直接紫9 Direct Violet

我直到9点钟才睡觉 I slept until 9 o'clock

直到9点才返回学校 They only return to school until 9 p.m

我一直睡到9点 I slept until 9 a.m

于是我一直睡到9点 Then I slept until 9 a.m

直到9点他才起床 He will only get up until 9 a.m