1、This time-lag is difficult to explain, but there are three possible reasons.
這種時滯現(xiàn)象很難解釋，但可能有三個原因。

2、The time-lag between a flash of lightning and the thunder
閃電和打雷相隔的時間

3、This time-lag is difficult to explain, but there are three.
這種時滯現(xiàn)象很難解釋，但可能有三個原因。

4、There is a time-lag between theoretical research and practical applications.
理論研究和實際應(yīng)用之間存在時滯。

time-lag翻譯