Aak
[医][=Alloactivated killers]同种（异体）活性的杀伤细胞
🗣️ 情景例句
I have two days off a week.
我一星期休息两天。
Education for women has improved in leaps and bounds.
妇女教育十分迅速地得到了改善。
Yes, I'm afraid so. It's getting late, and we have to be up early in the morning.
恐怕是这样。天渐渐变晚了。清晨我们得早起。