Porcupines swing their tails to stick predators with their quills.

豪猪会摇尾巴来使掠食者被自己的刺给粘住。

There, he'll have the room to swing that massive tail.

在那里它就有空间挥动巨大的尾巴。

And some lizards, like Komodo dragons, swing their flexible tails around to attack.

还有一些蜥蜴，比如说科莫多巨蜥，会摆动其灵活的尾巴来进行攻击。

When big cats are running they swing their tail this way or that and that helps them turn much more quickly.

大型猫科动物奔跑时把尾巴甩到一边或另一边，这能让它们转弯的速度更快。

Tail flexibility, how fast the tail could swing, and even the force that was applied on impact.

尾巴的柔韧性，尾巴摆动的速度，甚至是撞击时施加的力。

First, we need to figure out if euoplocephalus could swing its tail at all.

首先，我们需要弄清楚 euoplocephalus 是否可以摆动尾巴。

Using that information, I could then calculate how fast the tail club could swing from side to side, .

使用这些信息，我可以计算出尾杆可以从一侧摆到另一侧的速度，。

When this dinosaur swung its tail from side to side, these things crossed each other and acted like a pair of bone slicing shears.

当这种恐龙向两侧摆动尾巴时，这些东西相互交错，就像一对骨头切割剪一样。

That tail works as a counter balance, so they can swing their tail one way or the other while running and that helps them turn.

尾巴能起到平衡作用，在它们跑动时把尾巴摆到一侧或另一侧来帮助它们转弯。

But we cannot say for certain that euoplocephalus did swing its tail, or that it used it to defend itself against predators.

但我们不能肯定地说 euoplocephalus 确实摆动了它的尾巴，或者它用它来抵御捕食者。

We were able to say that euoplocephalus could swing its tail with plenty of force, and would not break its own tail while doing so.

我们可以说 euoplocephalus 可以用足够的力摆动它的尾巴，并且不会在这样做时折断自己的尾巴。

If euplocephalus swings its tail at a tyrannosaur like gorgosaurus, but the tail snaps in half, then that would cause a lot of trouble for euplocephalus.

如果真头龙对着蛇发女妖之类的霸王龙甩尾巴，结果尾巴折成两半，那可会给真头头龙带来不少麻烦。

If it could move its tail from side to side, then we need to know if it could swing its tail hard enough to cause any pain or damage to an attacker.

如果它可以左右移动它的尾巴，那么我们需要知道它是否可以用力摆动它的尾巴以对攻击者造成任何疼痛或伤害。