Biodemography
[计] 生态统计学
🗣️ 情景例句
Study hard and study everyday, if you want to master the English language.
如果你想精通英语的话，就得每天刻苦学习。
When do you want to leave?
你想什么时候离开？
however lucky and robust we are.
不管我们多么幸运，多么健壮，