安全生产是矿业企业的生命线,必须常抓不懈。
化学之美在于它能够从基本原理中创造出新的可能性。
皮革行业必须以可持续发展为核心进行演变,否则将被淘汰。
Time present and time past are both perhaps present in time future, and time future contained in time past.
Cinema is a matter of what's in the frame and what's out.