Femtogram
毫微微克(10的-15次方克)
🗣️ 情景例句
Were you raised in a bam?
你是牲口棚里长大的吗？
Does Louis like lemonade sour?
路易斯喜欢酸味强烈的柠檬水吗？
It seems that man was making a real effort to understand the seasons 20,000 years earlier than has been supposed.
看来人类早就致力于探索四季变迁了，比人们想像的要早20，000年。