Cof
abbr. cause of failure 导致失败的原因; coefficient of friction 摩擦系数; cost of funds 投资成本
🗣️ 情景例句
I have received the secretarial training for six months.
我曾接受过6个月的秘书训练。
I guess it is.
我猜是这样。
Hello. Ann here.
喂。我是安。