他准时到校
He arrived at school on time
以上为机器翻译结果，长、整句建议使用 人工翻译 。
昨天他没准时到校。
Yesterday he failed to get to school on time.
youdao
他本可准时到校上第一节课，但路上发生了交通事故。
He could be in time for the first class this morning, but there was a traffic accident.
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