经济学人下载:一周要闻 阿根廷比索跌37% 特鲁多连任陷危机 埃博拉有望被治愈

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The president need not step down so long as the elections are held under international supervision.
只要选举在国际监督下进行，总统就不用下台。 

2.shopping malls 大型商场

I like the Halloween decorations in the shopping mall.
我喜欢在购物商场的万圣节装饰品。

3.take time 从容进行

Take time to appreciate the things you enjoy.
花时间欣赏那些你喜欢的事物。

4.Take a chance on 冒险

She encourages them to take a chance on new ideas and initiatives.
她鼓励他们不妨冒险采用新的观点和措施。