My watch was disassembled for a period of time.

手表在一段时内被拆分了。

And window — a limited period of time.

一丝机会——有限一段时。

And it's only a short period of time.

而且仅仅用了很短时就达到了这样效果。

I avoid sitting for long periods of time.

有，认为这点更重要。避免长时坐着。

But they just happen for short periods of time.

但这些机制发生时很短。

We use 'for' to talk about periods of time.

们用 for 来谈论一段时。

And 'watch' — what we do for periods of time.

而 watch——是指们在一段时内所看事情。

Spends quite a lot of periods of time there.

他在那里待了很长一段时。

Use " for" for a period of time.

一段时就使用 for。

Over how long a period of time has this happened?

增重发生在多长时内？

To smooth out those intermittencies over long periods of time.

长期消除这些歇性问题。

You’re away from home for long periods of time.

你长时离家出走 时。

All of this happening in a very short period of time.

所有这些都发生在很短时内。

So we use 'for' to talk about periods of time.

所以们用 for 来谈论一段时。

Over that period of time, his health has gotten worse.

他健康在这段时里逐渐恶化。

That was the period of time I enjoyed most in Toronto.

那是在多伦多最开心一段时。

We've had 'drought' — a period of time with no rain.

们学了“干旱”——一段时没有下雨。

Firstly, we use in to talk about periods of time, general periods of time because in is very general.

首先，们用 in 来谈论时段，宽泛时段，是因为 in 很宽泛。

The period of time came to be called the “Dirty Thirties.”

这段时也被称作“肮脏三十年代”。

A cactus can store water for long periods of time.

仙人掌能储存水分很长一段时。