他们必须工作努力
They must work hard
以上为机器翻译结果，长、整句建议使用 人工翻译 。
他们为什么工作必须那么努力？
Why do they have to work so hard?
youdao
出于多个理由，企业必须努力工作以维护他们的名声——进而保护他们进行商业活动的环境。
For a number of reasons, companies are having to work harder to protect their reputation-and, by extension, the environment in which they do business.
She doesn't understand why they work so hard.
应用推荐
模块上移
模块下移
不移动