tenpo ala la mi jo e len noka walo.

English Translation

I never wear white socks.

tenpo ala la:
    tenpo means "time".
    ala means "no" or "none".
    la is a grammatical particle used to connect a context or condition to the main sentence.

In Toki Pona, "la" is used to set up a condition or background information. "tenpo ala la" can be translated as "never" or "at no time".

mi jo e:
    mi means "I" or "me".
    jo means "to have".
    e is a grammatical particle that indicates the direct object of the verb.

So, "mi jo e" translates to "I have" or "I possess".

len noka walo:
    len means "cloth" or "clothing".
    noka means "foot" or "leg".
    walo means "white" or "light-colored".

When combined, "len noka walo" means "white (or light-colored) foot clothing", which we can understand as "white socks" or "white shoes".

Putting it all together:

"tenpo ala la" gives the context of "never" or "at no time".
"mi jo e" means "I have".
"len noka walo" refers to "white socks" or "white footwear".

So, the entire sentence “tenpo ala la mi jo e len noka walo” translates to “I never have white socks” or “I never have white shoes”. This means that at no time do you possess white foot clothing.