Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
pull a brake on暂停，限制
例句：They had to put a brake on the economy.
他们不得不限制经济发展的速度。
2.Russia has a key role to play in the growing crisis.
have a key role to play扮演者关键角色，起着关键作用。相当于Play a key role
3.But he said he was not satisfied with it, as it did not include targets either for the amount of spending on agriculture or a date to eradicate hunger in the world.
either or不是...就是..., ...或...
例句：Even the weather is either beautiful or horrible.
连天气都变成了或美丽或恐怖。
Tom is going to buy either a guitar or a piano.
汤母不是要买一把吉他就是要买一架钢琴。