clarify

/ˈkler.ə.faɪ/

动词

（通过加热黄油等脂肪）使澄清，使纯净，使净化
澄清；阐明；使更清晰易懂
Could you clarify the first point please? I don't understand it completely.
请你把第一点再阐释一下，好吗？我没有完全明白。