Tna
abbr. 四硝基苯胺（Tetranitro-Aniline）；瞬态网络分析器（Transient Network Analyzer）
🗣️ 情景例句
There's always a friend around when you need one.
当你需要朋友帮忙的时候，总会有朋友在你身边的。
I am sorry to keep you waiting.
真抱歉，让你久等了。
Let us suppose that you are preparing a meal and keeping an eye on the baby at the same time.
假设你在做饭，同时又在照看孩子。