Prd
abbr. 綜合性技術(shù)研究與開(kāi)發(fā)（Polytechnical Research and Development）；產(chǎn)品研究與開(kāi)發(fā)（Product Research and Development）；產(chǎn)品需求文檔（Product Requirement Document）
??? 情景例句
Hobbies are supposed to be relaxing.
業(yè)余愛(ài)好應(yīng)該是令人放松的。
I couldn't keep the appointment because I was sick.
我不能赴約因?yàn)槲也×恕?/div>
Yes. If we go on polluting the world, it won't be fit for us to live in.
是的。如果我們繼續(xù)污染世界，地球就不適合我們居住了。