BBC在线收听下载:伦敦数万人游行抗议脱欧

短语讲解：

1. With about half the votes counted in the Australian general election, results so far suggest a very close contest.

so far 迄今为止; 到目前为止
例句：It is merely a hypothesis; so far.
到目前为止，这仅仅是一种假设。

2. Reports from Syria say that government shelling and air strikes have killed at least 25 people in the rebel-held town of Jayrud, northeast of Damascus.
 
at least 至少
例句：In fact it requires at least n generators.
事实上，它至少要有n个元素。