Poecilogeny
幼蟲多型
??? 情景例句
Then why don't we fix a date for a game one of these days?
那么我們為什么不在這幾天中訂個日子來打一場比賽呢？
He who follows two hares is sure to catch neither.
追逐兩只兔，兩頭都落空。
The search proved difficult, for the puma was often observed at one place in the morning and at another place twenty miles away in the evening.
事實上搜尋工作很困難，因為常常是早晨在甲地發現那只美洲獅，晚上卻在20英里外的乙地發現它的蹤跡。