这些障碍物对于想要往上游游动的鱼儿来说是致命的。The barriers are lethal to fish trying to swim upstream.他在那里有一栋房子，但在河上游几英里处。He has a house down there but it's miles up river.上游的城市将污水排放到河里。Cities upstream use the river to get rid of sewage....
The announcement was greeted with much hilarity and mirth.这一项宣布引起了热烈的欢呼声.The hilarity at the association's expense burst all bounds, now.拿协会开玩笑, 此时已漫无限度.By midnight the hilarity had increased.天已经到了午夜时分,人们的狂欢劲仍然有增无减....