by all means 。in any case。anyhow . 区别

by 'all means used to say that you are very willing for sb to have sth or do sth 可以；当然行；没问题 ： 'Do you mind if I have a look?' 'By all means.' "我看一眼行吗？" "当然可以。" in 'any case whatever happens or may have happened 无论如何；不管怎样 ： There's no point complaining now—we're leaving tomorrow in any case. 现在抱怨毫无意义，反正我们明天就要离开了。 anyhow:1. despite sth; even so 尽管；即使这样 ： The water was cold but I took a shower anyway. 水很冷，不过我还是冲了个淋浴。 ◊ I'm afraid we can't come, but thanks for the invitation anyway. 恐怕我们来不了，不过还是感谢邀请。 2. used when changing the subject of a conversation, ending the conversation, or returning to a subject （转换话题、结束谈话或回到原话题时说）无论如何，反正 ： Anyway, let's forget about that for the moment. 咱们无论如何暂时不要再提这件事。 ◊ Anyway, I'd better go now—I'll see you tomorrow. 反正我现在还是走的好 —— 明天见。 3. in a careless way; not arranged in an order 随便地；杂乱无章地 ： She piled the papers in a heap on her desk, just anyhow. 她把文件在桌上随便搁成一堆。