被污染的废物经常被随意倒掉，周边土地因此而变得很贫瘠。The polluted waste is often dumped, making the surrounding land infertile.黑麦耐贫瘠的酸性土壤。Rye is tolerant of poor, acid soils.土壤这样贫瘠，植物能获得足够的养分吗？Can plants obtain adequate nourishment from such poor...
Assaying goes: not less Sichuan ( In fact, the veteran also dangerous ).俗话说: 少不入川 ( 其实老了也危险 ).Method: the description, physical chemistry identity, assaying and micro - identity was used test.方法: 采用性状 、 理化鉴别 、 含量测定、显微鉴别等...
冷水中生物的基础代谢速度要低很多。Basal metabolism is much lower for creatures in cold water.蓝鲸是地球上体型最大的生物。The blue whale is the largest living thing on the planet.生命体通过某种生物过程聚集矿物质。The living organisms somehow concentrated the minerals b...