Learn Turkish: Limanda konteynerlerce yük bekliyor. - Container-loads of cargo are waiting at the port.

It combines konteyner (container) with the plural suffix -ler and the adverbial suffix -ce. When attached to plural nouns, -lerce or -larca emphasizes a huge, extensive quantity. It literally functions like "by the containers" but naturally translates to "container-loads of" or "countless containers of".

Why is yük in the singular form when there is so much of it?

In Turkish, nouns that follow a number or a quantifier usually remain singular. Because konteynerlerce already establishes that there is a massive amount, the noun yük (cargo/load) does not need a plural suffix.

Why doesn't the verb bekliyor take the plural suffix -lar?

The grammatical subject here is yük (cargo), which is singular. As a helpful reminder, even if the subject were grammatically plural, non-human subjects in Turkish almost always take a singular verb. Therefore, bekliyor is the only correct form here.

Can I use this same -lerce / -larca structure with time words?

Yes, it is extremely common with time periods to express an extensive amount of time. For example, applying it to time gives you words like saatlerce (for hours), günlerce (for days), and yıllarca (for years).