She's been in a snit since I took the car without telling her.

我没跟她打招呼就把她的车开走，她心里一直有气。（使用。

But once we figured each other out, it became a compelling reason to stick with Gmail rather than leave in a snit.

不过一旦弄明白，它就变成一个令人信服的理由让我们继续使用Gmail而不是一怒之下弃之而去。