to start working hard on something
empezar a trabajar duro en algo (empezar a trabajar duro en algo)
"Everyone needs to put their shoulder to the wheel to finish the project."
"Todos deben poner el hombro a la rueda para terminar el proyecto." (Todos deben poner el hombro a la rueda para terminar el proyecto.)
to begin to feel uncertain or unsure
someone who inspires or leads others toward success
feeling relaxed and comfortable
to make a stressful situation easier
without much thought or preparation
to betray someone for personal gain