您要查找的是不是：
- ecological retaining polder 围垦区
- Geo stepped ecological retaining wall 吉奥阶梯式生态挡墙
- reinforcement ecological retaining wall 钢筋生态挡墙
- A dyke was built to retain the floods. 修了一道堤坝挡住洪水。
- The mental faculty of retaining and recalling past experience. 记忆，记忆力储存与回忆以往经历的大脑之能力
- Geo ecological retaining wall 吉奥生态挡墙
- I retain a clear memory of those days. 我还清晰地记得那些日子。
- He has managed to retain most of his fortune. 他设法保存了他的大部分财产。
- Concentrated study will help you to retain knowledge. 专心学习有助于你记住知识。
- The regional ecological system is fragile. 区域生态系统脆弱。
- Dicotyledonous plants retain a series of strands. 双子叶植物中保留着一系列的束。
- Refit the handwheel retaining screw. 重新装置手轮固定螺丝。
- Reinstall handwheel and secure with retaining bolt. 重新安装手轮，用固定螺栓加固。
- Where do the first ecological refugees come from? 世界第一批生态难民来自何方?
- What should I do? Retain the red door? 现在门已经刷上红色了，怎么办?
- I cannot retain so much information. 我不能记住这么多的信息。
- You must retain your school reports. 你必须将学习成绩单保存好。
- An Ecological Design Idea for Hongyuan Building. 宏源大厦生态建筑的设计思路。
- China dishes retain heat longer than metal pans do. 瓷碟子保温的时间要比金属盘久。
- Who Make the Ecological and Environmental Crisis? 谁制造了生态与环境灾害?
