•He's colour-blind and can't distinguish (the difference) between red and green easily.他是色盲，很难分清红色和绿色（的不同）。

•I sometimes have difficulty distinguishing Spanish from Portuguese.我有时很难分清西班牙语和葡萄牙语。

•It's important to distinguish between business and pleasure.分清哪是正事、哪是娱乐非常重要。

•It's not the beauty so much as the range of his voice that distinguishes him from other tenors.他与其他男高音大不相同，并非因为他那华美的声音，而是他宽广的音域。

•He distinguished himself in British theatre at a very early age.他很小时就在英国戏剧界崭露头角。