to increase effort or commitment toward something
увеличить усилия или приверженность чему-то (uvelichit usiliya ili priverzhennost chemu-to)
"After the setback, they doubled down on their training routine."
"После неудачи они удвоили свои усилия в своей тренировочной программе." (Posle neudachi oni udvoili svoi usiliya v svoei trenirovochnoi programme.)
to talk about something that has been worrying you
to feel like you are about to cry because of strong emotions
work done by a group of people to achieve a common goal
to cause someone to feel sympathy or emotion
no longer interested or affected by something
To do your fair share of work.