四边形

A parallelepiped bounded by six similar faces (either rhombuses or parallelograms).

有六个面的平行四面体（或是棱形的或是平行四边形的）。

This construction is often called the parallelogram law of addition of vectors.

这种作图法常被称为矢量相加的平行四边形法则。

Graphical method: parallelogram law.

图解法：平行四边形法则。

Slashing confidently through the hidden parallelogram of forces that were its destiny.

极有自信地划过主宰其命运那隐而不见的平行四边形。

If many forces are acting simultaneously in different directions on any body, the direction of its motion will not correspond with any one of the forces, but will always follow a middle course, the summary of them, what is expressed in mechanics by the diagonal of the parallelogram of forces.

如果同时有许多各种不相同的力作用于某一物体，该物体运动的方向不可能与任何一个力的运动的方向相符合；而总是平均最短的方向，即力学所说的平行四边形的对角线。

Chris: Then it must be a parallelogram, right?

克里斯：那麼它应该是一个平行四边形，对吗？

What's the area of each parallelogram?

每个平行四边形的面积各是多少？

Teacher: We can work out the area of a parallelogram if we know the base and height of it.

师：已知平行四边形的底和高，就可以求出它的面积。

Its sides have lengths 6 and 8, find the area of the parallelogram.

某平行四边形的两条对角线成60 °，且其中两边的边长为6和8。

The area of every triangle equals the area of the parallelogram .

每个三角形的面积等于拼成的平行四边形面积的。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。