同学你好，该知识点来自沪江网校《新概念英语2、3、4册连读【双11专享班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
这里要根据上下文来理解
You've not yet lit the last 4 boilers? 还有四个锅炉没点火?

-No, I don't see the need. We are making excellent time.是啊,没必要都点,船速已经够快了

-The press knows the size of Titanic. Now, I want them to marvel at her speed. 泰坦尼克号是超巨轮，它的速度也应是超速的

这里make excellent time字面看是时间已经很完美了，结合船行驶的语境，就是说船速已经很好了，同时根据下面I want them to marvel at her speed也可以看出是说speed
希望对同学有帮助~