Nccls
[医][=National Committee for Clinical Laboratory Standards]全国临床实验标准委员会
🗣️ 情景例句
Examinations are at hand.
考试在即。
Time tries all.
时间检验一切。
They lived by hunting and by gathering roots, nuts and wild fruits.
他们靠狩猎和采集根茎、坚果和野果为生。