Stability can be defined as simply lack of change.

　　穩(wěn)定性可以被定義為只是缺乏變化。

　　The question of ecosystem stability is complicated.

　　生態(tài)系統(tǒng)穩(wěn)定性的問題是復雜的。

　　In general, diversity, by itself, does not ensure stability.

　　一般來說，多樣性本身并不能保證穩(wěn)定性。