Biodemography
[计] 生态统计学
🗣️ 情景例句
It's easy to pick something for my colleagues, but it's difficult for my boss.
给同事们的应该不难买，但是给老板的就难罗。
Gather ye rosebuds while ye may.
有花堪折直须折。
Dad, this box is too heavy. We can't carry it.
爸爸，这个箱子太重了，我搬不动。