Product certification
[计] 产品证书
🧩 词语组成解析
certification
[ˌsə:tifi'keiʃən]
n. 证明，鉴定，证书;
🗣️ 情景例句
Yeah. A left.
是的 向左转。
Wouldn't you like some coffee?
你想要一些咖啡吗？
As he was uncertain about making films with dialogue.
因为他对是否能制作配有对白的电影片没有把握。