Pioneered
vt. 開拓, 開發（pioneer的過去式與過去分詞形式）
??? 情景例句
I need a new toothbrush. My old one's worn out.
我需要一支新牙刷。舊的用壞了。
If we are bound to forgive an enemy we are not bound to trust him.
如果我們決定寬恕一個敵人，但決不能相信他。
We ate our sandwiches and a bar of chocolate each and began to feel better.
我們倆都吃了三明治和一塊巧克力才感到舒服些了。