But Dr Atherton said the designers found that just reducing the noise of the drill, by putting on ear defenders for example, was not enough.

但是阿瑟顿博士表示，设计人员发现仅仅通过带上耳朵防护罩或其他方法减少噪音是不够的。

youdao

But Dr Atherton said the designers found that just reducing the noise of the drill, by putting on ear defenders for example, was not enough.

但是阿瑟顿博士表示，设计人员发现仅仅通过带上耳朵防护罩或其他方法减少噪音是不够的。

youdao