Dehydrotachysterol
[化] 脫氫速甾醇\\n[醫(yī)] 脫氫速甾醇
??? 情景例句
you spend with Dad and me ... and the family.
你和父親， 我及全家人共度的。
Youth looks forward and age backward.
青年人向前看，老年人向后看。
But my sister bought this pair last month.
但是，我姐姐上個月買到了這樣的一雙。