您要查找的是不是：
- Lacrimal channel obstruction 泪道阻塞
- clearance of flood channel obstruction 行洪道清障
- 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。
- He get seasick every time he crosse the channel. 他每次渡英吉利海峡时都晕船。
- Ferryboats ply across the English Channel. 渡船定期往返于英吉利海峡。
- In a position to obstruct, hinder, or interfere. 挡道地处在阻碍、阻挡或干涉的位置上
- The water had worn a channel in the rock. 水把岩石冲出了一条沟。
- A reflected signal on a communication channel. 一种在通信信道上反射回来的信号。
- So as to thwart, obstruct, or oppose; perversely. 以便对抗，阻碍，或反对地; 任性地
- A channel over which pilot signal is transmitted. 可在其上传输导频信号的一种信道。
- Once he swam the English Channel. 他有一次横渡了英吉利海峡。
- Ships must follow the channel into the port. 船只必须沿航道进入港口。
- The channel of the river filled up with mud. 河道塞满了泥。
- A pipe or channel by which liquid is drawn off. 排水管排掉液体的管或通道
- It is a crime for the President to obstruct justice. 总统阻挠司法是犯罪。
- Several privateer often cruise near the entrance of the channel. 几只武装民船经常在这个海峡的进口附近巡航。
- Lacrimal gland origin is very rare. 临床上以泪腺为源发器官者十分罕见。
- A channel in which a tidal current runs. 潮汐水道潮汐流在其中流动的水道
- Conclusion: Lacrimal sac tumors are rare. 接下来两年多的追踪，肿瘤没有再复岭。
