例句與造句

1. In the larger gaps between the " black " keys, the width of the natural notes C, D and E differ slightly from the width of keys F, G, A and B . This allows close to uniform spacing of 12 keys per octave while maintaining uniformity of seven " natural " keys per octave.
2. It's difficult to find width of key in a sentence. 用width of key造句挺難的