He is very much interested in Japanese history. We are surprised at his vast knowledge of the subject.
他对日本的历史非常感兴趣。我们很惊讶他在这方面的丰富知识。
Your intelligence is as vast as the distance between Bombay and Mumbai.
你的智慧廣大的有如孟買和孟買之間的距離。
The vast majority of high school students I know can't read an unknown word and pronounce the letters in the right order, let alone pronounce it correctly or naturally.