听力原文

The 250 or so wild elephants which still live here are now strictly protected. And each year young are born to the small herds.
约250头野生大象依旧居住在此并受到严密的保护。每年都有小象诞生在稀疏的象群中。
If elephants were to survive anywhere in China, it could only have been here, in Yunnan.
倘若问大象打算在中国的何处安居，那必定非云南莫属。
The same mountains which guide the monsoon rains north and which made Joseph Rock's journeys so treacherous, also guarded Yunnan's forests and its wildlife.
山脉引导着季风带着湿热气流径直流向滇北，这不仅使得Joseph Rock的旅程充满了艰难，也保护了云南的森林和这儿的野生动物。

重点讲解

重点讲解：
1. or so
…左右；…上下；
eg. The driver usually spends four hours or so helping to load and prepare his lorry.
司机通常花 4 小时左右的时间帮忙装货和打理货车。
eg. Grandad usually sleeps for an hour or so after lunch.
爷爷吃过午饭往往要睡一个小时左右。
eg. We felt a little constraint with the new teacher for the first day or so.
在开头一两天，我们对新教师感到有点拘束。
2. be to do sth.
表示按计划或安排要做的事；
eg. We are to meet at the school gate.
我们将在校门口碰头。
eg. They are to go travelling in August.
他们计划八月份去旅游。
eg. She is to be married next month.
她将于下个月结婚。