1. The boxer took a hard blow to the chinbone and was knocked out.
这个拳击手的下颌骨遭到了猛烈的一击，被击晕了。

2. The doctor examined the patient's chinbone to check for any fractures.
医生检查了病人的下颌骨，以查看是否有骨折。

3. The chinbone is an important facial bone that provides structure to the lower face.
下颌骨是一块重要的面部骨骼，为下半脸提供支撑。