Estrone
n. 雌激素酮\\n[化] 雌酮
??? 情景例句
My grandfather is very much alive and kicking.
我的祖父還健在。
To sleep like a baby
睡得像個嬰兒
But a closer study of the evidence, supported by a deeper sense of the period,
但是，進一步仔細研究，對那個時代的深化了解，