adj.第一流的；最佳的
adv.一流地
His new book shows him to is a first rate novelist. 他的新书证明他是一位第一流的小说家。
He's not in the first grade as a musician. 他不是第一流的音乐家。
The jeweler chose diamonds of the first water for the queen's crown. 珠宝商为女皇皇冠选择了最佳的钻石。
