BBC在线收听下载:利比里亚高考25000名考生全部落榜

1. Mr Kerry said the world must stand up to ensure that chemical weapons must never be used again.

stand up 起立；竖立；经久耐用
例句：A soldier must stand up to danger.
士兵必须能勇敢地面对危险。

2. The Russian President Vladimir Putin has, meanwhile, said there is no evidence a chemical attack had taken place in Syria or who may be responsible if one had.

take place 发生
例句：Where does it take place?
这个场景发生在哪里？

3. More than 100 people who have had contact with the teenager have been quarantined.

more than 不止
例句：Running releases more than just sweat.
跑步释放的不止是汗水。

4. “I know there are a lot of weaknesses in the schools, but for a whole group of people to take exams and every single one fail(ed), I have my doubts about that and I’m trying to meet with the university to find out what actually happened.”

find out 查明,发现
例句：They conducted two studies to find out.
她们实施了两个研究去查明结果。