Tdn
abbr. 可消化的养分总量（total digestible nutrients）
🗣️ 情景例句
I guess I'd better tear up the letter and start over again.
我想我应该把信撕掉重新再写。
Don't speak all you know, but know all you speak.
不要尽言所知，而要尽知所言。
I visited museums and sat in public gardens.
我参观了博物馆，还去了公园。