做间谍就是生活在一个充满怀疑和猜疑的世界里。
"To be a spy is to live in a world of constant doubt and suspicion."
当障碍被消除且跨国合作受到鼓励时,创新就会蓬勃发展。
The only limit to our realization of tomorrow is our doubts of today.
可持续发展不是选择,而是煤炭行业的必然要求。
"The past is always tense, the future perfect."