他粗暴的外表下藏着一颗非常善良的心。His gruff exterior concealed one of the kindest hearts.他被一颗跳弹打伤了肩膀。He was wounded in the shoulder by a ricochet.牙医可能会决定拔掉那颗牙，以免反复发作。A dentist may decide to extract the tooth to prevent recurrent trouble...
我自行与外界隔绝，仅以书和杂志为伴。I locked myself away with books and magazines.他在自己防卫森严的宅院里把自己与外界隔绝开来。He remains barricaded inside his heavily-fortified mansion.她堵住耳朵隔绝噪音.She stopped up her ears to keep the noise out....