饥饿和贫困是世界上许多动荡和苦难的根本原因。
Hunger and poverty are the root causes of much of the world's unrest and misery.
Innovation in mining is not an option; it's a necessity for survival.
Immature love says: 'I love you because I need you.' Mature love says: 'I need you because I love you.'
释义：大丈夫立身处世，应当随机应变，怎能固执于一种方式？