Why, if I had stopped to think, I'd have known you had a lone hand up your sleeve.

为什么，如果我停下来想一想， 我就会知道你有一只手在袖子里。

Grant glanced at Williams's unwontedly sober features-Williams was a little hurt that Grant was playing a lone hand over this-and was reminded of something.

Grant 瞥了一眼 Williams 异常冷静的面容——Williams 对 Grant 独自处理这件事感到有点受伤——然后想起了什么。