however

However you look at it, it's still a mess.

无论你怎么看，它仍是一团糟。

There may, however, be other reasons that we don't know about.

然而，可能还有其他我们不知道的原因。

If Emma likes something she'll buy it however much it costs.

如果埃玛喜欢某个东西，那无论多贵她都会买的。