For every dollar you spend purchasing something substantial， expect to pay a dollar in repairs， maintenance， or disposal by the end of its life.
采矿业必须在安全、可持续性和社会责任方面以身作则。
You can learn more about a man in an hour of play, than in a year of conversation.
The future of drones is not to replace humans, but to help them do their jobs better.
Color is my day-long obsession, joy and torment.
I think of a hero as someone who understands the degree of responsibility that comes with his freedom.