英音听力讲解:里约奥运会开幕式于马拉卡纳球场举行

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短语讲解：

1. The opening ceremony for the Olympic Games in Rio de Janeiro is taking place at the Maracana Stadium.

take place 发生，举行
例句：A total solar eclipse is due to take place some time tomorrow.
明天某个时刻会发生日全食。

2. The South Sudanese government has agreed to allow in a regional military force to try to solve the peace deal.

agree to 同意， 赞成
例句：I cannot but agree to your decision.
我不得不同意你的决定。

3. The base is a key objective of a rebel offensive aimed at breaking the government siege of eastern Aleppo where a quarter of a million of civilians were trapped.

a quarter of 四分之一的
例句：He has the backing of almost a quarter of the electorate.
他得到了几乎1/4选民的支持。