Usages of complejo
Eso es un concepto complejo, es decir, no es fácil.
That is a complex concept, that is to say, it is not easy.
El problema es complejo, o sea, difícil de resolver.
The problem is complex, in other words, difficult to solve.
Mi hermana dice que la logística del envío por avión es compleja.
My sister says that the logistics of the shipment by plane are complex.
La realidad es más compleja, es decir, tiene muchos matices.
Reality is more complex, that is to say, it has many nuances.
Son complejos, así que, terminado el circuito, descansamos un rato.
They are complex, so, once the circuit is finished, we rest a while.
El ilusionista hace acrobacias que son más complejas de lo que parecen.
The illusionist does acrobatics that are more complex than they seem.
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