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
I left my bag of film on the ferry.
我把装底片的旅行袋遗放在渡船上了。
Work makes the workman.
工作出工匠。
Class 3 did very well in the school sports meeting last week.
“3班在上星期的校运会上表现很好。