1. Expression：shit-eating grin

Explanation：A facial expression denoting arrogance, smugness, or self-satisfaction. （满意的表情，心满意足的样子）

Example：I really wanted to wipe that shit-eating grin off his face after he won the poker game.

他打牌赢了后，一副洋洋自得的样子，真令人恶心。

Go ahead, sit there with that shit-eating grin on your fare.

来吧，就这样，脸上带着满意的表情坐在那儿。

"I won’t need some moral support with Mrs. Ike at all," he said with the shit-eationg grin on his face.

他带着一副傲慢的表情说：“我根本不需要得到艾克夫人一些精神上的支持。”

2. Expression：horse sense

Explanation：Common sense. （常识，日常生活的经验）

Example：I'm not surprised he got hurt—that kid doesn't have the horse sense to get out of a dangerous situation.

他受伤我一点也不奇怪——那孩子没有摆脱危险处境的常识。

Horse sense tells me I should not be involved in that project.

常识告诉我不应该参与那个项目。

He's not very highly educated, but he's got a lot of horse sense.

他虽然没有受过高等教育, 但他有丰富的日常生活经验。

3. Expression: back the wrong horse

Explanation：To support someone or something that cannot win or succeed. （支持失败的一方）

Example：I don't want to back the wrong horse, but it seems to me that Jed is the better candidate.

我并不想选错人，但在我看来杰德是更好的人选。

Politicians who backed the wrong horse in the election are now trying to curry favor with the winning candidate—without much success.

在竞选中支持错了一方的政客现在试图讨好获胜的候选人，但是没有取得多大的成功。

You really backed the wrong horse when you picked that swimmer to win the race—he didn't even get any medal!

当你选那个游泳运动员想去赢得比赛时，你真是选错人了——他连奖牌都没得过！

Over his long career, Coach Carpenter recruited hundreds of football players for our university, who helped their team win their division trophy year after year. It's a mystery how he made his decisions. Yet the fact remains that he rarely backed the wrong horse.

在卡朋特教练多年的执教生涯中，他为我们学校招录了数百个橄榄球队员，帮自己所在的球队连年夺取地区赛冠军。卡朋特教练到底是怎么选队员的，谁也说不清。但事实是：他几乎从不会挑错人。