Meanwhile in May 2009, the Chalk River reactor started leaking heavy water and was again shut down.

也是在2009年5月，乔克里弗反应堆开始出现重水泄露现象，被迫再次关闭。

youdao

She took a chalk, turn to the blackboard, and wrote "youth is something like a rushing river…""

她拿起粉笔转身在在黑板上写道：“青春如同奔流的江河…”

youdao

Rain drilling the earth, and the path a river, gathering the water into a torrent that rinsed the chalk white again.

BBC: England��s ghostly South Downs Way

An hour before dark I stood on the summit of a small chalk bluff, from which I looked down onto Cuckmere Haven, the point at which the river reaches the English Channel.

BBC: England��s ghostly South Downs Way