Biochron
生物年代, 较短时期的化石, 生物时
🗣️ 情景例句
How long has he held office?
他已任职多长时间了？
Learn wisdom by the follies of others.
要从别人的愚行中学到聪明。
What is needed in the case of noise is a study of large numbers of people living under noisy conditions,
对于噪音问题，需要对大量生活在噪音中的人进行研究，