Ccna
abbr. 思科认证网络支持工程师（Certified Cisco Network Associate）
🗣️ 情景例句
What's that?
什么组织？
I graduated from Yale University 5 years ago.
五年前，我从耶鲁大学毕业。
Because of this, we kept looking back, wondering if we were leaving a trail of oil and petrol behind us.
因此，我们不时地掉过头，怀疑车后是否留下了机油和汽油的痕迹。