Omphalion
脐中心
🗣️ 情景例句
She is giving me piano lessons in exchange for her English classes.
我教她英语，她教我弹钢琴。
To get ahead you'll have to work long hours and take short vacations.
想成功就要多流汗少享受。
Please sign here to show that you have received the money.
请在这儿签字以表明你已收到这笔钱。"