The investigation has suddenly switched to a new line of inquiry.
调查突然改用一种新的探询方法。
《柯林斯英汉双解大词典》
2
Some passengers unable to fly on domestic routes switched to rail, with train companies putting on more services on the East Coast and West Coast main line routes.
一些无法乘坐国内航线的乘客转而选择火车,而火车公司也在从东海岸到西海岸的路线上增加了更多的车次。
3
The preventer on the runaway well failed. Even before the disaster, the operators of many gulf rigs had switched to more advanced preventers, strengthening this last line of defense.