水生杂草

Since fanwort has a different ecological niche than other aquatic weeds such as alligator alternanthera and common water hyacinth, which could imply "joint" impact on native species diversity, further biological and ecological investigations of fanwort are urgently needed.

由于水盾草为罕见的外来沉水杂草，可与其他水生杂草对本地的生物多样性产生"联合"影响，因而迫切需要对其进行深入的研究。

Although the upper reaches of a freestone stream may be spring-fed, the vast majority of its flow comes from run-off or tributaries.

尽管这种河段可是是spring-fed，最主要的径流来自run-off和支流，快速流动的河水限制了杂草和其他植被的生长，而形成了这种＂free stone＂河底，这种河段的水生昆虫不如spring creek那样多，所以鳟鱼比较少，但是不不乏机会主义者。

A strong,nonpersistent,yellow,crystalline herbicide,C12H12Br2N2, used to control water weeds.

杀草快一种强力非持久性、黄色、晶状除草剂C12H12Br2N2，用于控制水生杂草

One of the most serious problems is the appearance of water weed s.

其中最为严重的问题是水生杂草。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。