您要查找的是不是：
- Your car is causing an obstruction. 你的汽车挡道了。
- He was found guilty of obstruction. 他被判阻挡犯规。
- backflow obstruction 回流受阻
- In a position to obstruct, hinder, or interfere. 挡道地处在阻碍、阻挡或干涉的位置上
- So as to thwart, obstruct, or oppose; perversely. 以便对抗，阻碍，或反对地; 任性地
- Four required per backflow preventer. 每个防回流阀需要四个。
- It is a crime for the President to obstruct justice. 总统阻挠司法是犯罪。
- Winterization of backflow preventers. 防回流阀的过冬处理。
- To slow down or impede by creating an obstruction. 阻塞用制造障碍的方式使慢下来或使受阻
- Intestinal obstruction causing colic, vomiting, and constipation. 肠阻塞造成腹绞痛、呕吐和便秘的肠道堵塞
- The entrance is clear of obstruction. 这入口没有障碍物。
- Obstruction may be caused by chronic cicatrization. 梗阻也许是由慢性瘢痕造成的。
- For use with backflow preventer test cocks to protect from damage. 用于防回流阀测试旋塞，防止受到破坏。
- The fallen trees obstruct the road. 倒下的树将路堵住了。
- A check valve may be required ahead of the backflow preventer. 此时在防回流阀前面可能需要安装一个止回阀。
- Obstruction on the R/W, pull up and go around. 跑道上有障碍物，拉升复飞。
- The traffic flowed round the obstruction. 车辆绕过障碍行驶。
- To obstruct the movement of an opponent. 阻挡阻碍对方队员跑动
- A point of congestion or obstruction. 阻塞点拥塞或阻塞的地点
- This would create an air gap to eliminate any possible backflow. 这将产生一个气隙以消除任何可能的回流。
