Smithsonian agreement
[经] <<史密森协定>>
🧩 词语组成解析
n. 史密森尼（美国博物馆）；史密森学会
🗣️ 情景例句
there's a lot to do around the house,
这屋里有很多事可做，
Poor men's words have little weight.
人微言轻。
This is done by a great number of ring-shaped air jets on the bottom of the craft.
船底装上大量环状喷气嘴以实现这一目的。