Ih
abbr. 测量端（Instrument Head）；间接加热（Indirect Heating）；反时针（Inverted Hour）
🗣️ 情景例句
Don't mention it.
没事儿。
Soon up, soon down.
升得高，落得快。
of supplying sufficient details to enable the thing to be constructed.
而且向它提供制造核弹的细节，