晓旭的妈妈
on time；punctual；on schedule ； punctual; on time; on schedule:火车准时到达。The train arrived on schedule.请准时出席。Please be punctual.尽管下雨， 他还是准时到了。He was there on the stroke in spite of the rain.
Mr.白马王爷
on timepunctualon schedulepunctuality | observe time | on the minute | to the minute | on the stroke | punctual to the minute | betimes | on scratch | up to time . 更多 .
我的飞飞
1.on time表示恰好在规定的时间 Mary is always on time for an appointment玛丽总是准时赴约 2 on schdule是美国人较喜欢用的习语，表示恰好在时间表规定的时间。 The alarm clock woke him up on schedule闹钟准时将他闹醒 3.on the dot／on the tick 前者的dot可能由钟表面代表钟点数的小点转义而来，后者的tick由钟行走时的嘀嗒声转义。两个习语都表示非常准时。另外,on the tick主要用于英国英语 The guests arrived at eight on the dot客人们八点钟准时到 The plane took off at six on the tick 飞机六点钟准时起飞 4.on the stroke该习语中的stroke由报时钟声转义 He was here on the stroke 他准时来到这里
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