接触；开始讨论：指开始讨论某个话题或者进入某个领域。
get onto //
动词 to board or cause or help to board (a bus, train, etc) 上(公车、火车等) (See also get on)
... get wise 变卤莽 fasten on 抓住, 紧紧握住, 纠缠... get onto 上车 ...
... (fix) 安放 (get onto) 骑上 (climb) 登上 ...
... be in touch 联系，保持联系 get onto 骑上（马等），登上（车等） associate with vtr (keep the company of) 与…打交道，和…来往，联系… ...
... get on for 接近某一时间 get onto 与某人接触 get out 从......拿出某物 ...
How did we get onto the subject of marriage?
我们怎么谈到婚姻问题上了？
You need three A levels to get onto this university course.
你要参加这个大学教程，就需要通过三科高级证书考试。
At the moment, I'm hoping to get onto a Ph.D program.
目前，我希望能攻读博士学位。
They wanted to go out onto the moon as soon as they could get ready.
VOA : special.2009.07.15
I think that these countries are somewhat trying to manage this oil risk but they can't yet get onto the frontier.
我想这些国家或多或少,都试着控制石油风险,但他们根本无法达到有效边界。
金融市场课程节选 : 耶鲁公开课
Now let's get onto the course topic for today, which is food and evolution.
现在我们要进入今天的主题,即食品和人类演化
关于食物的心理学、生物学和政治学课程节选 : 耶鲁公开课
This windfall has given us the opportunity to help local people get onto the housing ladder.
BBC: NEWS | UK | England | Devon | Extra ?4.5m for affordable homes
Its hurts our feeling when overweight people get onto our rickshaw and won't pay their fares.
Many sites have rigged their search optimization to get onto the first page of Google results.