设想英雄垂暮日，温柔不住住何乡。
设想英雄到了晚年，不住在温柔乡还能住在哪里。
长夜黑暗，处处险恶。
水产养殖是农业的下一个前沿领域。
The true test of a mathematical idea is its ability to inspire further questions.
The mind is a dynamic system of interrelated processes.
The more you are in a state of gratitude, the more you will attract things to be grateful for.