sidetrack
['saidtræk]
vt. 将（火车）转到侧线；转变（话题）
n. （铁路）侧线；次要地位
vi. 转到侧线；转变话题
同义词
参考例子
1.He sidetracked to enliven the atmosphere.
他换了个话题来活跃一下气氛。
2.Oriented case overshot for sidetrack drilling tech is a main component in down hole work-over operation.
定向套管开窗侧钻技术已成为井下大修作业的重要组成部分。
3.Some new logging problems have appeared because horizontal, extended reach and sidetrack wells have been widely drilled in recent years.
近年来油田采用一些大斜度定向井、老井开窗侧钻井等钻井技术，测井面临如何作业的新问题。
英文解释
n.
1.a short stretch of railroad track used to store rolling stock or enable trains on the same line to p
2.wander from a direct or straight course
网络释义
sidetrack
侧线; 侧锧; 侧钻; 走向旁道;
sidetrack siding
侧线; 旁轨;
blind sidetrack
无定向侧钻;
uncontrolled sidetrack
未受控制侧钻;
industry sidetrack
专用侧线（铁路）;