precious and endangered

• 珍稀濒危

precious and endangered的用法和样例：

例句

1. CMO is rare and endangered in our country.
   厚朴为国家二级珍稀濒危保护植物，国家二级保护野生中药材。
2. The Primary Study on Population Ecology and Embryology of Rare and Endangered Davidia involucrateBaill.
   珍稀濒危植物珙桐的种群生态学和胚胎学的初步研究。