VOA慢速英语:Limits on Rare Earth Exports Get China in Trade Dispute

call for需要
例句：Your plan will call for a lot of money.
你的计划需要许多钱。

2. This week, President Obama explained why the United States is involved in the case.

involve in使参与〔陷入, 牵扯到〕
例句：Don't involve me in your quarrel.
不要把我卷进你们的争吵中。

3. But to do that American manufacturers need to have access to rare earth materials, which China supplies.

have access to接近（或进入）的方法（或权利、机会等）
例句：Students must have access to good books.
学生应该读得到好书。

4. But their policies currently are preventing that from happening, and they go against the very rules that China agreed to follow.

prevent from阻止, 防止
例句：His prompt action prevented the fire from spreading.
他的果断行动制止了火势的蔓延。
go against违背, 作对
例句：That'll go against the traffic regulations.
那要违反交通规则的。

5. But he said he would take action if American workers or businesses were facing unfair trade policies.

take action采取行动, 行动起来
例句：The police had to take firm action to deal with the riots.
警方不得不采取果断行动来对付骚乱。