to avoid laughing in a funny situation
面白い状況で笑わないようにする (omoshiroi joukyou de warawanai you ni suru)
"It was hard to keep a straight face during his silly speech."
"彼の馬鹿げたスピーチの間、真顔を保つのは難しかった。" (Kare no bakageta supīchi no aida, migao o tamotsu no wa muzukashikatta.)
the final problem that makes a situation unbearable
to reduce differences or improve relations
to teach someone about a subject or skill
to help someone through a difficult period
to think or speak about something repeatedly
to persuade someone to support you or agree with you
