Certification of product
[化] 产品证明书
🧩 词语组成解析
certification
[ˌsə:tifi'keiʃən]
n. 证明，鉴定，证书;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
So, what do you think you're going to do?
那么你打算怎么办呢？
An old physician, and a young lawyer.
医生年老的好，律师年轻的俏。
Well, you're going to have roast beef and potatoes again tonight!
唉，今晚你们又要吃烤牛肉和土豆了！