Dtra
abbr. Defense Technical Review Agency (USA) <美国>国防技术回顾署; Defense Threat Reduction Agency 国防降险署
🗣️ 情景例句
God helps those who help themselves.
天助自助者。
The best (greatest) fish keep (swim near) the bottom.
好鱼游水底（指：有价值之物不能轻易得到）。
Don't thank goodness. Thank Li Lei.
不要谢天谢地，要谢李磊。