用法:
1 (act of) re-entering 重新进入或加入; 重返; 重新报名; 再次报名.

用法:
2 return of a spacecraft into the earth's atmosphere （宇宙飞船）重返地球大气层:
The capsule gets very hot on re-entry. 航天舱在重返大气层时产生高热.

• feel bad(feel badly)
• feel cold(feel the cold)
• feel equal to(feel up to)
• feel pity for(take pity on)
• feel(feel for)
• feet(foot)
• festal(festive)
• few(a few)
• few(little)
• fewer(less)
• fill the bill(fill the gap)
• fill(fill up)
• find pleasure in(get pleasure from)
• find(find out)
• find(look for)
• fine(finely)
• fire(fire at)
• firm(firmly)
• first and last(first or last)
• first of all(first off)
• first thing(last thing)
• first(firstly)
• first(last)
• first-class(first-rate)
• fit out(fit up)