at_intervals_of_有道手机词典

1.Several red and white barriers marked the road at intervals of about a mile.
每隔1英里左右就有一些红白相间的路障来标示道路。
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2.There were knots in the rope at intervals of a foot.
每隔一步的间隔，那条绳子上就系有一个绳结。
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3.Yet they continued to crow about once a day—at intervals of 23.7 hours to be precise.
然而，它们仍然坚持每隔一天，确切来讲是23.7个小时报晓一次。
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