1.lecture about 作报告，办讲座

We found the lecture about the manned spacecraft terrific.
我们发觉关于载人航天飞机的讲座太棒了。

Great way of having a lecture about local fauna and flora.
有关於地方动物群和植物的一个演讲的大师方法。

2.come up to 达到；将近；来到近旁

I find that people are just wonderful because people come up to me all the time and I think it is because the character is so accessible that they feel it is how I am, too.
我发现人们实在太好了，大家一直都来关心我，而我觉得这是因为这个角色很亲切所以都觉得我应该也是这个样子的。

Some parents, she said, would come up to her and ask about a magic pill or vitamin "to cure their child."
她说，有些家长会来找她，问她有没有特效药或者维生素“来医好他们的孩子。”

3.call on 号召；要求

One of Kenya's leading churchmen has called on the government to resign...
肯尼亚一位高级宗教人士要求政府下台。

Frequently he was called upon to resolve conflicts.
不断有人要求他出面解决冲突。

4.fail to 未能

Things change and when you fail to grasp that truth you suffer.
世事变迁，而且你也未能领会承受折磨的真相。

Every year flying cars fail to take to the skies is a disappointment.
每一年，天空中都未能出现飞翔的汽车，这真是令人失望。