Tna
abbr. 四硝基苯胺（Tetranitro-Aniline）；瞬態網絡分析器（Transient Network Analyzer）
??? 情景例句
Excuse me? What did you say?
對不起，你說什么？
I'd like to try on these hats.
我想試試這些帽子。
It was not yet light, so it was easy to stay hidden.
天還沒亮，所以很容易隱蔽。