单词	prelaunch
释义	prelaunch /prēˈlônCH/ /-ˈlänCH / adjective Concerning activities or conditions before the launch of a spacecraft, campaign, product, etc.The three-day event allows the crew to practice prelaunch activities, including launch pad safety training and a countdown dress rehearsal.... The campaign was to be conducted in three stages: prelaunch, launch, and postlaunch. The practice countdown capped the week's Terminal Countdown Demonstration Test, in which flight crew members went through launch pad safety training and other prelaunch activities.
随便看	sparaxis spar buoy spar deck spare spare a thought for sparely spare me days! spareness spare no effort spare no expense (or no expense spared) spare (or save) someone's blushes spare part spare-part surgery sparer spare rib spare someone's blushes spare the rod and spoil the child spare time spare tyre sparge sparger sparid sparing sparingly sparingness

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