如果不想住在猪圈里,我们就不得不经常挤出时间整理房间。
If we don't want to live in a pigpen, we have to make time to clean up the room often.
51区的工作人员不得不经常中断这种测试,匆忙地将这些样机送到“紧急藏身处”,以免它们被苏联间谍卫星发现。
Area 51 staff had to regularly interrupt such tests and hurry prototypes into "hoot-and-scoot sheds", lest they are detected by Soviet spy satellites.
他们不得不经常设法应付利润较少的问题。
They have always had to do with relatively small profit margins.
Politicians are often in contexts where they have to smile a lot.
政治家的环境,他们不得不经常微笑。
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