Aplasia
n. [醫]發育不全, 成形不完全,先天萎縮
??? 情景例句
Who is it?
是誰?
You are a very considerate person.
你是一個深思熟慮的人。
and as the number of stars in the universe is so vast,
因為宇宙中恒星的數目極其龐大，