Class b certification
[計] B類認證
?? 詞語組成解析
class
[kl?s]
n. 班;等級;階級;種類;
vt. 把…歸入某等級，把…看作（或分類、歸類）;把…編入某一班級;
adj. 很好的，優秀的，出色的;
vi. 屬于…類（或等級），被列為某類（或某級）;
certification
[?s?:tifi'kei??n]
n. 證明，鑒定，證書;
??? 情景例句
to move the air-conditioning units
移動空調設備
Our new product line has been very successful. We've expanded the factory twice this year already.
我們新的生產線非常成功，我們今年已把工廠擴展了兩倍。
In the process, he enjoyed himself thoroughly and kept telling everybody how much he hated hospitals.
在晚會上他盡情娛樂，一再告訴大家他是多么討厭醫院。