Actions that take place one by one

[roddy]

Yip's Comprehensive Chinese Grammar: measure words are a relatively recent addition to Chinese, so many expressions and idioms lack them. "A speaker / writer of the language can create expressions modelled on this omission pattern.... when using 一 with a quadrisyllabic rhythm"

I wonder if this would count.

Personally I'd add in the 个.

[sparrow]

Another individual answered on StackExchange, which corroborates skylee's and Chen Decong's comments—我一个字一个字地学习汉语 is "more confortable to a native speaker [sic]".

 

Though he doesn't say explicitly that he's a native speaker, I think it's implied, which is good enough for me.

[hoshinoumi]

That makes it finally clear, thank you all for your help, this community is just awesome

 

 

BTW is it hoshinoumi or 海星？ I believe they are different. 

 

I was told Hoshinoumi would be the Japanese equivalent for 海星。Starfish

[skylee]

I have  attached a photo. Take a look. 

[sparrow]

@Skylee:

I'm jealous of your font. How did you get it?

[skylee]

The font came with my recent upgrade to Android 4.3.

[hoshinoumi]

You´re right, thanks for pointing it out to me. I always thought it meant starfish. It still sounds cool, though

And thank you everyone for helping