英语语法分析

At precent, I give you one affirmation without ways.

目前我没法给你一个肯定的答复。

The bridge is the world's largest span arch bridge at precent.

该桥为目前世界上跨径最大的拱桥。

It points out that the precent ecosystem in Xiaozhangzhuang village is stable but inefficient.

指出目前小张庄村生态系统是稳定的，但效率低。