Rief
abbr. recycling isoelectric focusing 再循环等电聚焦
🗣️ 情景例句
for giving me a passing grade.
给我及格分数。
Where are you calling from?
你从哪打来的？
It sped downhill at the end of the race and its driver had a lot of trouble trying to stop it.
它在接近终点时，冲下了山坡，驾驶员费了好大劲才把车停下来。