a small problem that is exaggerated
誇張された小さな問題 (kōchō sareta chiisana mondai)
"Their argument was just a storm in a teacup."
"彼らの議論はただのティーカップの中の嵐でした。" (Karera no giron wa tada no **tī kappu no naka no arashi** deshita)
to summarize something briefly
a student who is favored by the teacher
a time of calmness and tranquility
to reverse a situation and gain the upper hand
something extremely boring
To do what one has promised.