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
Sure, that would be find with me.
当然，我对此没有意见。
I can speak Chinese.
我会说中国话。
Since then, they have been trying to find out how the fire began.
从那时起，他们一直试图找出起火的原因。