In a literal sense, the reporter (记者）wants to emphasize the severity of the accident by associating the number of reactors involved with the source of radioactive leakage which are the reactor cores. In short, they want to describe how bad this accident is. On a human level, it means that it will take a long time to clean up, be extremely expensive and affect thousands of lives.

saving friendship

friendship is very important in life, so we should save friendship in life .
friendship is like the warmest coat for your heart in life, we should keep it in our hearts carefully. True friends <strike>is to</strike> help <strike>with</strike> each other forever and they care about each other without anything in return. <strike>it is</strike> They communicate heart <strike>and</strike> to heart .
how to save a friendship ?
you had better remember your best friends in<strike>to</strike> your heart , and help<strike>ing</strike> them with heart when they meet troubles without importance or fortune, friendships depend on character and <strike>natural of person</strike> basic nature of people.  Studying knowledge and <strike>making ourself rich brain</strike> enriching ourselves, you can help best friends <strike>with</strike> find wisdom.  friendship is like a river, it needs to be kept between friends every day .

Comment: Thank you for the helpful and thought-provoking essay.

The heart is more important than brain

This is a strange question. I always think of <strike>something</strike> interesting things. I will describe my opinion <strike>about it </strike> on subject.

As people <strike>have to</strike> finish <strike>a lot of</strike> working every day , <strike>and</strike> they <strike>have to</strike> focus on thinking <strike> them</strike> things over <strike>by brain</strike> in their mind.  I believe heart movement needs to be balanced with the brain, as much as <strike>and the</strike> brain movement <strike>also</strike> needs to be balanced with heart.  People often pay more attention on brain movement.  I think both of them are "brains". <strike>, and</strike>  Although both of them are important, I feel the heart is more often<strike> important</strike> (neglected?) than the brain.
The heart has to accept the order of the brain.   It will seldom move naturally. It will be angry with you or tired of your brain orders. Both of them <strike>affect</strike><strike> each other</strike> influence one another. The energy of the heart can affect whole <strike>of </strike>body and <strike>it will </strike>enlarge.
Maybe it will affect the whole world with heart energy. <strike>and </strike>Now we can't explain it in science .
What shall we do to keep heart and brain in balance ?
A simple way is to keep the brain empty for a few minutes in the morning, and make ourselves relaxed . It may help to think of nature; <strike>like</strike> mountains , rivers , green forest , and so on.  Forgetting all the questions.  The heart needs to be looked after warmly . <strike>it will come out </strike>Large energy <strike>to</strike> will come out  from it to help <strike>you</strike> <strike>to</strike> work hard for your brain .
We have two "brains " in the body.  Th heart is just as important as the  brain. We should look after them <strike>and we will</strike> strive to keep them in balance.

Comment:  Great topic!  I made some literary liberties to change meaning of several sentences to have thematic continuity.  Otherwise, the previous commenter is correct, it does sound contradictory.  Is the heart more important than the brain or is it more neglected??  I felt you meant neglected, but please change it, if otherwise. 

My 2 yuan: This essay seems to address the topic of mindfulness and meditation.  It is very applicable to current society, especially with the advent of technological connectivity and social media.  I feel its very easy to neglect one's own spirtual and mental health.  The lack of awareness  of "heart energy" and mindfulness could contribute to depression, fatigue and mental illness.