But the amount of hearing loss might differ by as much as 30 dB between people who had the toughest ears and those with the most tender ones — a huge variation.
但是,人与人之间听力丧失的程度不同,那些耳朵比较强健的人与耳朵与较柔嫩的人相比,差异可达30分贝。
2
Hartmut Mehdorn, chief executive of DB, has turned a chronic loss-making railway into a powerful international business which plans to float some 30% of its shares next year.