For Enlightenment liberals, who saw nations as moving in a single historical direction, this question was crucial.

启蒙运动时期的自由主义者认为，各国都在朝着一个单一的历史方向前进，对于他们来说，这个问题至关重要。

However, there are only usually three or four lanes going in a single direction.

然而，通常只有三个或四个车道在一个方向上行驶。

That can skew your portfolio too sharply in a single direction, making you vulnerable to a decline in previously hot asset groups.

这可能使你的投资组合向一个方向大幅变化，让你容易受到此前热门资产类别下跌的冲击。

And other than that, it's all just scattered islands, Antarctica, or open empty ocean for thousands of kilometers away in every single direction.

除此之外，都是分散的岛屿、南极洲，或者几千公里外各个方向的空旷海洋。

Let's say we want to create an electric field where all positive test charges move uniformly in a single direction.

假设我们要生成一个所有人都在移动的字段 阳性测试定期向一个方向充电。

If the merger idea is correct, lots of new material flowing in a single direction feeds a black hole, driving the spin faster one way.

如果融合理论是正确的，来自同一方向的大量新物质流入可以促使黑洞成长，从而使得按照一个方向高速旋转。

Depending on its surface pattern, it might turn in a single direction to create a drop or ring, or rotate more freely to form a sphere.

依据其表面图案不同，珍珠可能会朝一个方向转动变成水滴状或环形，抑或更自由地自转形成球状。

We use a one way diode essentially for  single direction communication, and so there's no way to access the plant computers  from off site.

我们基本上使用单向二极管进行单向通信，因此无法从异地访问工厂计算机。

Designs could only carry enough fuel for 30 seconds of flight, and when airborne, the powerful thrust in a single direction made jetpacks difficult and dangerous to control.

设计只能携带足够飞行 30 秒的燃料，而在空中时，单一方向的强大推力使喷气背包难以控制且危险。

Oftentimes, just going in a single direction to follow the form and then hitting it with a little bit of perpendicular form line to create a nice smoothing effect.

通常，只需沿一个方向跟随形状，然后用一点垂直的形状线击打它即可产生良好的平滑效果。

During the process of wound healing, collagen is redeposited at the wound site, but instead of the basket-weave formation found in healthy tissue, the new ECM is aligned in a single direction, impeding inter-cell processes, and reducing durability and elasticity.

在愈合的过程中，胶原蛋白会在伤口旁重新沉淀，但是不同于在健康组织中的篮织形成法，新的ECM以单向排列，这阻止了细胞间的联系并且减少了耐久性和伸展性。