设定新目标或做新梦想永远不会太老。
You are never too old to set another goal or to dream a new dream.
When you do something best in life, you don’t really want to give that up – and for me it’s tennis.
采矿中的风险管理不是要消除所有风险 - 那是不可能的 - 而是要明智地理解和减轻风险。