Lysenko gave a deep rumbling laugh at his own joke.
李森科對自己講的笑話報以朗聲大笑。
I just couldn't laugh at his jokes the way I used to.
我就是不能像以前那樣笑他講的笑話。
When I was a lad his age I would laugh at the strangest things.
我是他那麼大的`小夥子時，我常嘲笑一些最奇怪的事情。
Frank tried to laugh off his aunt's worry.
弗蘭克試圖對他姑媽的煩惱一笑置之。