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
for reading to the kids in the hospital.
为住院的孩子朗读。
My money is all gone!
我一文不名了！
Life on a desert island is wretched.
认为荒岛生活很可怕，