在海边过了一天,他被晒黑了.He is sunburned from a day on the beach.带上防晒油,以免被晒黑了.Take your suntan lotion with you so that you won't get burnt.黑色素使皮肤变黑是人被晒黑的原因.Melanin darkens the skin and is the cause of suntan....
I really don't see any reason for changing it.我真的不明白为什么要改变它。To an extent, that is the reason for the meeting.在某种程度上，那就是召开这次会议的原因。The boss retains enormous influence by reason of his position.老板由于自身的地位而一直有极大的影响力。...