Echinenone
海胆酮, β-胡萝卜素-4-酮
🗣️ 情景例句
Hello. Is Susan there?
喂，是苏珊吗？
The waiter seems to be in a hurry to take our order.
侍者似乎匆匆忙忙拿我们的订单。
Jack is the strongest boy in the class.
杰克是全班最强壮的男孩。