1.Scientists who study the sun watch for sunspots -- violent storms that can affect communications, navigation systems and even electric power stations on Earth.

watch for 等待；当心；守候

We'll be watching for any developments.
我们会密切注视任何进展L)%.uaY416;^PB^-9。

He is watching for a better chance.
他正在等待更好的机会&y_i4KMQ,yzDd5=^e]~B。

2."That is billions of tons of solar material that's blown away from the sun. (When) it's traveling millions of kilometers an hour, but that is relatively slow."

blow away 吹走；驱散；给…留下深刻印象; 深深打动

I was blown away by the tone and the quality of the story.
我深深地被故事的基调和格调所打动w%4YFdkt)z。

Everyone I met overwhelmed me and kind of blew me away.
我遇到的每个人都让我很感动，可以说给我留下了深刻的印象%xgk)lp42O。

3dH_q19c,5lJ&jntf-wwFzx94-nsS1cbFWFy^Erh~_P 来源:可可英语 http://www.kekenet.com/broadcast/201508/390093.shtml