Devoiced
a. 清音化的\\nvt. 使清音化（devoice的過去式及過去分詞）
??? 情景例句
I've got six months to go until graduation.
我還有六個月就畢業了。
Has he studied French very long?
他學習法語很長時間嗎？
The next morning the whole family trooped in to watch the performance.
第二天早晨全家人結隊來到起居室看我表演。