Certification of fitness
[化] 质量合格证
🧩 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
Because I am still standing here firmily on my feet.
我仍然好端端地站在这里。
All work and no play make Jack a dull boy.
尽量学，尽情玩。
It was j-223,just double the second item.
j-223第二项的订量要加倍。