Ccna
abbr. 思科认证网络支持工程师（Certified Cisco Network Associate）
🗣️ 情景例句
An oil tanker ran aground and lost about 15,000 gallons of gas into the sea.
一般油轮搁浅，把 15000 加仑油倾泻在海里了。
My wife and I still remember the first day we arrived in Beijing.
我太太和我仍然记得到北京的第一天。
What are these?
这些是什么？