Pdsr
abbr. Principal Director of Scientific Research 科研部主任
🗣️ 情景例句
It is. That's why we bought it for you.
是的。这就是我们买给你的原因。
Yes.
是的。
From these he can go on to appreciate more complex forms or combinations of several forms.
从这些形体出发，观赏者可进一步观察更为复杂的形体或若干形体的组合。