to start doing something seriously and with focus
empezar a hacer algo seriamente y con enfoque (empezar a hacer algo seriamente y con enfoque)
"We’ve wasted enough time—let’s get down to it and start working."
"Hemos perdido suficiente tiempo—vamos a ponernos manos a la obra y empezar a trabajar." (hemos perdido suficiente tiempo—vamos a ponernos manos a la obra y empezar a trabajar.)
to keep your promises and do what you say
to decide that you want to achieve something specific
to look suddenly happy or excited
to look deep inside yourself for strength or understanding
to calm yourself when feeling nervous or tense
to be careful; to pay attention to avoid danger