Prca
[醫][=pure red cell agensis]單純紅細胞再生不良
??? 情景例句
Come over to my place at you convenience.
方便時請來我處。
I'll probably stay home and watch TV.
我可能會呆在家看電視。
So far, no man has travelled farther than the moon, but spaceships without people have reach other parts of the universe.
到目前為止，尚未有人到過比月球更遠的地方，但無人駕駛的宇宙飛船已到達過宇宙的其它地方。