to take a subordinate role to someone else
扮演他人下属的角色 (bànyǎn tārén xiàshǔ de juésè)
"He was tired of playing second fiddle to his colleague."
"他厌倦了在同事面前总是扮演第二小提琴手。" (tā yànjuànle zài tóngshì miànqián zǒng shì bànyǎn dì èr xiǎotíqín shǒu)
to adjust to a new environment or situation
a perfect romantic couple
to work together to solve a problem
a crucial test that proves the value or success of something
to insert or add something gradually
to talk very quickly and without stopping