All by itself. He wasn't anywhere near it. It started all by itself.

车子自己发动起来的。他并没在汽车旁边。它是自己发动起来的。

But it's pretty cool all by itself.

但它本身就相当酷。

And it drives completely by itself.

而且它完全是自动驾驶的。

The car responds and starts moving all by itself.

汽车全自动地回应和发动。

Let's listen to the phrase again, by itself.

来单独再听一遍这个达。

So, an interjection can stand by itself.

所以，感叹词可以单独使用。

By itself, obsession is not inherently problematic.

就其本身而言，执迷本身没有问题。

Treatment It may occasionally resolve by itself.

治疗它有时可能会自己消失。

And our relationship would end by itself.

我们的关系就会自行结束。

Now, by itself, it's not a lot.

但现在它的产量不高。

Suddenly, the heavy door creaked open, all by itself.

突然，沉重的门吱嘎一声自动开了。

And that contrast would be startling by itself.

这种对比本身就会令人吃惊。

That data is evident by itself.

那个数据本身就是明显的。

By itself it wouldn't be visible from Earth.

白矮星自身的光我们在地球上是看不到的。

It can be set to turn on by itself.

它可以设置为自动打开。

Let's listen to the phrase again, by itself.

来单独再听一遍这个达。

We can just use it by itself as an adverb.

我们可以把它作为副词使用。

We know that spinal cord cannot recover by itself.

“我们知道，脊髓无法自行修复。

Behind him, the car engine starts up all by itself.

在他身后，汽车的发动机竟然自己发动了起来。

It can be served by itself, with rice, or with noodles.

可以直接吃 也可以配着米饭或面条吃。