Thyronine
甲腺原氨酸
🗣️ 情景例句
Hello, Richard. I found your bag!
哈啰，Richard， 我找到你的旅行袋。
Someone is working in the manhole.
有人在
Once a year, a race is held for old cars.
旧式汽车的比赛每年举行一次。