not keeping to roads
不沿着大路；穿过田野
their route was across country, through fields of corn.
他们没走大路，是穿过玉米地走的
(Brit.)test public opinion by dissolving Parliament and holding a general election
(英)（解散议会）举行普选
(Brit.)a subject in which a person is skilled or knowledgeable
(英)精通的领域
In Vietnam during the period of U.S. military operations there
越战时在越南：美国军事行动时期在越南
“He'd been in country a month longer than the other four”(&b{Nelson DeMille})
“他比其他四个人已在越南多呆了一个月”(&b{纳尔逊·德米耶})