Calcitriol
[化] 骨化三醇
??? 情景例句
The plan is a simple one.
計劃很簡單。
ON. It gets bright.
合上開關，它就會變亮。
The turtle at last gives up by pulling his feet under his shell and the game is over.
海龜終于屈服了，將4條腿縮進殼內。