L-nmma
[医]L-单甲基精氨酸
🗣️ 情景例句
I'm extremely sorry for the delay.
对此延误，我深感抱歉。
There is no rose without a thorn.
玫瑰花没有不长刺的。
Aunt Harriet lived in that leisurely age when servants were employed to do housework.
哈丽特生活在一个悠闲的年代，家务事都由雇来的佣人代劳。