个中: [书面语] (其中) therein 短语和例子个中奥妙 the inside story; the secret of it
奥妙: profound; secret; subtle; what's behind it 短语和例子神奇奥妙 mysterious and profound; 不难明白其中的奥妙。 it's not difficult to see what's behind it. 其中并无奥妙。 there is nothing secret about it. 其中定有奥妙。 there