Breakdown of asa wa kaisoku yori kakuekiteisha no hou ga suite irukoto ga arimasu.
Questions & Answers about asa wa kaisoku yori kakuekiteisha no hou ga suite irukoto ga arimasu.
は marks 朝 as the topic: as for the morning / in the morning.
So 朝は sets the scene for the whole sentence:
- As for the morning, ...
- In the morning, ...
If you used 朝に, that would mark morning more directly as a time point, but in this sentence は sounds natural because the speaker is contrasting or describing what happens in the morning as a general tendency.
- 快速 = rapid train / quick service
It skips some stations. - 各駅停車 = local train / train that stops at every station
Breaking down 各駅停車:
- 各駅 = each station / every station
- 停車 = stopping
So 各駅停車 literally means a train that stops at every station.
