Life & Conditions 2 生活条件

In modern times we humans face changing conditions.在现代，我们人类面临着不断变化的条件。

For humans to live,we need clean air and clean water.为了人类的生存，我们需要干净的空气和干净的水。

Pollutions is now a growing problem around the world.污染在世界各地都是一个日益严重的问题。

Pollutions poisons the air and water that we depend on.污染污染了我们赖以生存的空气和水。

Polluted air makes people sick and afraid to go outside.污染的空气使人们生病，不敢出门。

Polluted water poisons our food supply.被污染的水污染了我们的食物供应。

As a result,we never know which foods are safe to eat.因此，我们永远不知道哪些食物是安全的。

Human beings cannot live in a poisoned environment.人类不能生活在有毒的环境中。

Therefore,pollution is a major threat to our existence.因此，污染是我们生存的一大威胁。

Humans need temperatures to be in a comfortable range.人类需要一个舒适的温度范围。

To be in a comfortable range means to be neither too hot nor too cold.To be in a comfortable range意思是既不太热也不太冷。

With global warming,global tempertures are rising.随着全球变暖，全球气温正在上升。

As temperatures rise,the polar icecaps will melt.随着气温升高，极地冰盖将会融化。

As the polar icecaps melt ,ocean levels will rise.随着极地冰盖的融化，海平面将会上升。

Areas of some countries will soon be under water.一些国家的部分地区将很快被淹没。

People will be forced to relocate from flooded areas.人们将被迫从洪水地区搬迁。

In nature, even small changes can sometimes have large effects.在自然界中，即使是很小的变化有时也会产生很大的影响。

It's difficult to predict what's going to happen.很难预测会发生什么。

The entire ecosystem that we depend on is changing.整个生态系统,我们依赖于正在发生变化。

some of these changes are irreversible.这些改变是不可逆转的。

Irreversible changes cannot be undone.不可逆转的变化是无法逆转的。

Let's hope the humans are smart enough to understand how the world is changing.让我们希望人类足够聪明，能够理解世界是如何变化的。

With more understanding ,we can make better choices about what to do.有了更多的理解，我们可以更好地选择做什么。

We can face the challenges of pollution and global warming.我们可以面对污染和全球变暖的挑战

We need to do this before it's too late.我们必须在一切都太迟之前做这件事。

This planet Earth is our only home and we need to protect it.地球是我们唯一的家园，我们需要保护它。

we need to protect environment that supports us.我们需要保护支持我们的环境。