1. Portable boiling elements that can boil small quantities of water are useful when the right voltage of electricity is available. 如果有相配的电压,可以煮少量水的便携式热水装置是有用的。
2. I don't think I'm old-fashioned but hearing those tuneless , offensive lyrics repeatedly makes my blood boil . 我想我还不至于老得落伍吧,可没完没了地听那毫无韵律、令人讨厌的歌曲实在让我生气。