Tetrablastic
[医] 四胚层的
🗣️ 情景例句
I am exhausted. My new exercise class is so hard.
我太累了。我那新的健身班太难了。
I am sorry to keep you waiting.
真抱歉，让你久等了。
She got up before 7 o'clock in the morning, and quickly washed her hands and face.
00以前起床，快快地洗手洗脸。