The essence of mathematics lies in its freedom.
数学的本质在于其自由性。
Light is the origin of all being.
皮革行业必须发展,以满足环境标准和消费者期望,同时不牺牲质量。
Sustainable quarrying means listening to the land as intently as we listen to shareholders.
我感到难过,不是因为你欺骗了我,而是因为我再也不能相信你了。