🧩 词语组成解析
non
[[nɔn]]
adv. 非, 不
certification
[ˌsə:tifi'keiʃən]
n. 证明，鉴定，证书;
🗣️ 情景例句
I'm Martha Vann.
我叫Martha Vann。
And also hope you will be able to make unique contribution to the economy of both countries.
同时期望你们为中美两国经济做出卓越的贡献。
Before you leave the lab, make sure the electricity is turned off and the windows are shut.
你们离开实验室前，务必要关上电源，关好窗户。