Gf
[化] 凝胶过滤法; 凝胶过滤色谱法; 生长因子
🗣️ 情景例句
but they need me at the hospital today,
但今天医院有事，
What''s the fare to New York, Economy Class?
去纽约的经济舱机票多少钱？
I have known very few writers, but those I have known,
我所认识的作家寥寥无几，然而凡是我所认识