BBC在线收听下载:美短跑名将盖伊女儿遭枪击身亡 年仅15岁

短语讲解：

1. The US and Britain have called for unconditional ceasefire in Yemen to be implemented within days.

call for 要求; 需要
例句：Different circumstances call for different tactics.
不同的情势需要不同的策略。

2. At the same meeting both countries also said they would consider introducing more sanctions against Russia and Syria because of their actions in the Syrian city of Aleppo.

because of 因为，由于
例句：It is mainly because of my fault.
这主要是由于我的过错。

3. Critics demanded an explanation because he has not been heard from since addressing the United Nations general assembly in September.

hear from 收到…的来信; 从…听到
例句：You won't hear from Gaston ever again.
你再也不会收到加斯顿的来信了。