bite the bullet idiom
咬紧牙关应付，硬着头皮应付;勇敢地面对
to force yourself to do something unpleasant or difficult, or to be brave in a difficult situation
I hate going to the dentist, but I'll just have to bite the bullet. 我不愿去看牙医，但看来我不得不硬着头皮去。
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