Certifications
n. [法] 认证；资质证书（certification的复数形式）
🗣️ 情景例句
5, 6, 7, go right, 1, 2, back, 5 6 7
向右 1 2 后退
Do you often study history on Saturday?
你常常在星期六学历史吗？
Another time, possibly, but not Friday.
换个时间还有可能，但不要在星期五。