It's a pleasure to meet you. Can I take those boxes for you?

很高兴认识您。我能帮您拿那些箱子吗？

That's OK.

没关系。

And now I'm telling you I can't manage this Friday.

我正要告诉你我星期五没办法（出来）。

For one thing they keep the water clean.

一来，水下植物可以保持水的清洁。

What shall we do today? The weather's not very good.

我们今天该做什么呢？天气很不好。

We're not treated as equal citizens.

我们没有被当作平等公民对待。