to perform better or be more advanced than others in the class
クラスで他の人より優れている、または進んでいること (kurasu de hoka no hito yori sugurete iru, matawa susunde iru koto)
"He studies extra hours to stay ahead in class."
"彼はクラスで先に進むために追加の時間を勉強します。" (kare wa kurasu de saki ni susumu tame ni tsuika no jikan o benkyou shimasu)
to stand and act against challenges or difficulties
to compare one thing with another; to make someone oppose so...
to switch from an old system to a new one
to volunteer or offer assistance when needed
to shoot or remove one by one
to continue doing something from the point you stopped
