receive的现在进行时为：receiving...

recycle的现在进行时为：recycling...

obstruct的现在进行时为：obstructing...

actuate的现在进行时为：actuating...

pray的现在进行时为：praying...

backbite的现在进行时为：backbiting...

beatify的现在进行时为：beatifying...

commiserate的现在进行时为：commiserating...

jab的现在进行时为：jabbing...

mist的现在进行时为：misting...

choke的现在进行时为：choking...

曲轴主轴承进入口.The feed holes for the crankshaft main bearings....

knight的现在进行时为：knighting...

page的现在进行时为：paging...

romp的现在进行时为：romping...

tense的现在进行时为：tensing...

covet的现在进行时为：coveting...

disarray的现在进行时为：disarraying...

exacerbate的现在进行时为：exacerbating...

retrograde的现在进行时为：retrograding...

bench的现在进行时为：benching...

transport的现在进行时为：transporting...

fade的现在进行时为：fading...

vaporize的现在进行时为：vaporizing...

soot的现在进行时为：sooting...

betoken的现在进行时为：betokening...

hearten的现在进行时为：heartening...

那只猫掉进洞里,爬不出来.The cat fell into the hole and couldn't climb out of it.那条蛇爬进洞里.The snake has crawled into a hole.要把球打进洞里看起来算不了什么,其实很需要技术.It takes more skill than it looks to knock the ball into the hole....

bomb的现在进行时为：bombing...

fart的现在进行时为：farting...