Pcd
abbr. 节圆直径（Pitch Circle Diameter）；巴拿马运河局（Panama Canal Department）
🗣️ 情景例句
Yes, I went to the aerobics class today.
去了啦， 我上了有氧运动课了。
If you want my advice,I don't think you should go.
如果你想要我的忠告，我不认为你应该去。
It will be a mixed school where not all the children are disabled.
它是一所混合式学校，学校里的儿童并不都是残疾人。