The nurse was attentive to his patient,constantly checking to be sure she was comfortable.
护士
病人很关心，经常做检查以确保她舒适。
确；哎呀（表惊奇）The nurse was attentive to his patient,constantly checking to be sure she was comfortable.
护士病人很关心，经常做检查以确保她舒适。
He likes to be sure of his bodily comforts.
注重物质上舒适。
He is intelligent, to be sure, but he’s also very lazy.
固然聪明， 
是也很懒惰。
She looked over her shoulder to be sure of her footing.
她扭头看了看后面以确认自已是否站稳了。
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