to work hard and focus on something
трудиться усердно и сосредоточиться на чём-то (trudit'sya usyerdno i sosredotochit'sya na chom-to)
"If you want to succeed, you have to put your nose to the grindstone."
"Если вы хотите добиться успеха, вам нужно трудиться усердно." (Yesli vy khotite dobiti'sya uspekha, vam nuzhno trudit'sya usyerdno)
in a difficult or tricky situation
to gain new energy or enthusiasm for something
feeling nervous or anxious
too surprising or shocking to believe
to browse or explore websites on the internet
completely flawless or ideal
