Echinoidea
[醫] 海膽綱
??? 情景例句
If it ain't broke, don't fix it.
東西還沒壞，就別急去修它。
You'll fall, if you don't take care.
你不專心的話，就會跌倒。
right living, and the need for abandoning bad habits etc.,
生活有規律、需要克服壞習慣等等，