压力不做功，因为这个方向的,压力，总是和,运动方向垂直。

The tension is not doing any work, because the tension, which is in this direction, is always perpendicular to the direction of motion.

youdao

他解释说。男性眼睛的构成使它适合运动和方向。 。

Thee composition of the male eye makes it attuned to motion and direction.

youdao

尽量减少用户看向和运动方向不同的方向的必要性，尤其是当移动速度比走路快的时候。

Minimize the necessity for the user to look away from the direction of travel, particularly when moving faster than a walking pace.

youdao

And she's had the opportunities since MAPP to actually teach a lot of the courses and she's very focused on goal setting and she's very focused on sports psychology.

攻读硕士学位后,她获得很多授课的机会,她的方向是目标设立,和运动心理学。

哈佛公开课 - 幸福课课程节选

The fact that you don't need a force for it to move forever at a given speed in a given direction, that's not obvious, because in daily life you don't see that.

对于物体不需要力的作用就能保持,确定的速度和方向持续运动这一事实,它并非显而易见,因为在日常生活中你看不到这种情况

耶鲁公开课 - 基础物理课程节选