Certifications
n. [法] 认证；资质证书（certification的复数形式）
🗣️ 情景例句
Give me a discount.
给我打个折吧。
My watch says two o'clock.
我的表是两点钟。
But instruments far more delicate than that were needed if any really serious advance was to be made.
但是，如果要取得真正重大的进展，需要有比这种装置精细得多的仪器。