in AM, also use 美国英语亦用 reentry
1 N-UNCOUNT 再进入 Re-entry is the act of returning to a place, organization, or area of activity that you have left. 再进入
2 N-UNCOUNT (航天器的)重返大气层,返回地球 Re-entry is used to refer to the moment when a spacecraft comes back into the earth's atmosphere after being in space. (航天器的)重返大气层,返回地球