After two or three hours, there was no more contact with them.
两三个小时之后，便再也联系不到他们了。
You should contact China East reservation office within 48 hours before your departure.
出境前48小时以内，你必须跟东航订位组联络。
Sideswipe surveyed the area, until we lost contact with him four Earth hours ago.
侧击调查的地区，直到在地球时间四小时前，我们与他失去了联系。
We will contact you 48 hours in advance to confirm the delivery.
我们将提前48小时与客人联系，确认配送事宜。
We have received your message and will contact you within 24working-hours.
我们已收到您的留言，将会在工作日的24小时内与您联系并回复。
We have received your message and will contact you within 24working-hours.
我们已收到您的留言，将会在工作日的24小时内与您联系并回复。
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