outstanding problems的用法和樣例：
例句
用作名詞 (n.)
- Each of them, at any stage of its development, has unsolved problems and undigested anomalies.
它們中的每個(gè)在自己發(fā)展的任何階段上,都有未解決的問(wèn)題和未理解的反常。 - The vastness of the oceans and the complexity of their problems still leave many puzzles unsolved.
浩瀚的海洋及其問(wèn)題的復雜性仍然留下許多未解決的難題。
