Thymin
胸腺激素
🗣️ 情景例句
Richard, did you go to the Davis Aerobics class today? Richard
你去上Davis有氧运动健身课了吗？
We're working fast to try and make up for lost time.
我们正加紧工作以争取补偿失去的时间。
The dentist is very busy at the moment.
牙科医生这会儿很忙。