Fcc certification
[计] 联邦通信委员会认证
🧩 词语组成解析
[计] 联邦通信委员会\\n[化] 流化床催化裂化
certification
[ˌsə:tifi'keiʃən]
n. 证明，鉴定，证书;
🗣️ 情景例句
I guess I didn't have one, fortunately.
但我想我并没有，因为我的幸运的。
How many years have you been playing pingpong?
你打乒乓球多少年了？
No, it isn't, said the detective suddenly.
不，不对，侦探突然说。