2) He really didn't know.
他并不知道。
3) Don't ask himIt is also at his wit's end
不要问他了,他也不知道
4) He lets on that he doesn't know.
他装着不知道。
5) He was unaware of my presence/that I was present.
他不知道我在场.
补充资料:无感
1.无憾。感,"憾"的古字。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条