1.a series of 一系列的

例句：Boom! Boom! Boom! A series of explosions shook the valley.

轰!轰!轰! 一连串爆破声震撼山谷@WFkVNDE%zBR。

2.take over 接管

例句：He will take over Class 9801 next week.

下星期他将接管 9801 班0*819k+)%2#。

3.world records 世界纪录

例句：He set the racing world on its ear by breaking eight world records.

他创造了8项世界纪录使径赛界人士大为惊讶.

4.on board 加入

例句：She came on board in the late Sixties and spent two decades with the agency.

她于六十年代末加入，在这个机构干了二十年9|C(8f!3[-;!。