prevent例句
A dentist may decide to extract the tooth to
prevent recurrent trouble.
牙医可能会决定拔掉那颗牙，以免反复发作。
Smear Vaseline on to your baby's skin to
prevent soreness.
给孩子皮肤上抹些凡士林以防止肿痛。
The security forces had to intervene to
prevent the situation worsening.
安全部队不得不介入，以防止局势进一步恶化。