Dogs today are rarely bred for their working abilities (herding, hunting, guarding), but for a very particular type of appearance, which inevitably risks the spread of physical and temperamental abnormalities.

如今狗种培育很少是注重其为人们做事的能力（如放牧、打猎、看门等），而是为了让其具有特定外形，这不可避免地可能导致一 些生理和性情上的畸形现象随繁殖而扩散。

They must know how to pace each assignment or project according to their daily timetable and work ability so that they might not be overwhelmed by the tasks at hand.

他们必须懂得如何根据每天的时间表和学习能力来安排做作业和项目的速度，不至于让手头的工作压得喘不过气。