Success is not final, failure is not fatal: it is the courage to continue that counts.
我們不能忽視煤炭的經(jīng)濟(jì)作用，但也不能忽視其環(huán)境影響。
創(chuàng)新不僅僅是創(chuàng)造新事物；它關(guān)乎改進(jìn)已有的事物。
"When you are writing, you are trying to find out something which you don't know."