Ing
abbr. 惯性导航与制导（Inertial Navigation and Guidance）；强中子发生器（Intense Neutron Generator）
🗣️ 情景例句
I haven't seen you for a long time.
很久没见了。
Study sickness while you are well.
居安思危。
On motorways you can, at least, travel fairly safely at high speeds,
在公路上还好，你至少能以相当快的速度安全地向前行。