过去是一个跟随你到任何地方的影子。
The past is a shadow that follows you everywhere.
There are many Beths in the world, shy and quiet, sitting in corners till needed, and living for others so cheerfully that no one sees the sacrifices till the little cricket on the hearth stops chirping, and the sweet, sunshiny presence vanishes, leaving silence and shadow behind.
The success of aquaculture lies in balancing yield and ecology.