oritatamijitensha wa karui.

A folding bicycle is light.

Breakdown of oritatamijitensha wa karui.

• は: topic particle
• 軽かるい: light (not heavy)
• 折おりたたみ自転車じてんしゃ: a folding bicycle

Questions & Answers about oritatamijitensha wa karui.

How do you read 折りたたみ自転車は軽い?

It is read:

おりたたみじてんしゃ は かるい。

Broken down:

• 折りたたみ = おりたたみ
• 自転車 = じてんしゃ
• は = pronounced wa here, even though it is written with は
• 軽い = かるい

So the full reading is:

おりたたみじてんしゃ は かるい。

What does 折りたたみ自転車 mean as one unit?

折りたたみ自転車 is a compound noun meaning folding bicycle.

It breaks down like this:

• 折りたたみ = folding / fold-up
• 自転車 = bicycle

So together:

• 折りたたみ自転車 = folding bicycle

In Japanese, it is very common to put nouns and noun-like modifiers directly before another noun, so this kind of long compound is normal.

Why is は used here?