Femtogram
毫微微克(10的-15次方克)
🗣️ 情景例句
And I'd like to give you a little something to take home. Let me unroll it.
对了，我有样小东西想送你，让我把它打开。
They enjoin us to follow their example.
他们强要我们以他们为榜样。（有些象绕口令。）
A French physician decided to get rid of the wild rabbits on his own estate and introduced myxomatosis.
一位法国内科医生决定除掉自己庄园内的野兔子，于是引进了这种多发性粘液瘤疾病。