把这些食物都扔掉真让人心里不自在。

It ___goes ___against ___the ___grain to throw all this food away.

承认自己的感情对她来说有违本性。

Admitting her feelings ___goes ___against ___the ___grain for her.

为一个小错误举报我的同事，这违背了我的本性。

Reporting my colleague for a minor mistake would ___go ___against ___the ___grain.