It's a hard work, so you must work hard.
这是一件艰苦的工作,因此你必须努力去做。
We must work together, brothers!
我们必须携手工作,伙计们!
In his comments Wednesday, he said the United States must work to remove trade barriers and open new markets.
VOA: special.2010.07.09
I must work here because I love this work, I love this job."
我在这里工作,一定是因为我喜欢这份工作“
And you assumed that he must work out.
你认为他肯定常常锻炼。
应用推荐