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
Wait with your pictures for a second.
先别忙着你的摄影。
A ragged coat may cover an honest man.
不能以衣著取人。
I was very tired this morning. I couldn't get up.
我早上很累，起不来。