英语语法分析

These characteristics make spartina a valuable component of the estuaries where it occurs naturally.

这些特点使自然生长的米草成为河口的宝贵组成部分。

With fisheries and estuaries closed, they cannot easily find other jobs.

但随着渔场和和河口场的关闭，他们很难找到其他工作。

The answer was to block certain estuaries leading to Antwerp and Rotterdam.

答案是阻塞一些特定的通往安特卫普和鹿特丹的河口。