Prebuckling
预弯曲
🗣️ 情景例句
Sorry, I'm afraid I'm busy tonight.
很抱歉，恐怕我今晚没空。
How did you get so dirty?
你为什么弄得这么脏？
It was upon this principle that the first instruments were made,
据这一原理，制造出了最初的地震仪器，