This was intended to exclude the direct rays of the sun...其目的是阻挡直射的太阳光。X-rays have confirmed that he has not broken any bones...X光片证实他没有骨折。Gravity incurvates the rays.重力能使光线弯曲.A convex lens is used to concentrate rays of...
这暴露了以长久的环境破坏为代价换取短期工业利益的错误。It exposes the fallacy of short-term industrial gain at long-term environmental expense.人生的充分利用就是为争取比人生更长久的东西而度过一生。The great use of life is to spend it doing something that will outlast it. 他们经...