If you want to go sightseeing, a ferry trip is usually pretty cheap.
如果你想观光,坐船通常是比较便宜的。
A scientist has come up with a good idea. That's it!
科学家想起了一个好创意。就是这个!
When we use a phrase like 'it serves him right', we are, in part, admitting that a certain set of circumstances has enabled justice to act of its own accord.