by no means和by all means的意思

by no means 无论如何都不
by all means 无论如何都要
你可以从字面上来区分
by all means可以直译为“通过一切手段”
那就是“无论如何都要”了
by no means 恰恰相反

by no means
adv.
决不

by all means
adv.
尽一切办法, 一定

by no means 绝不要
by all means一定要