to be very familiar with something; to have a thorough understanding of something
何かに非常に詳しい; 何かを十分に理解している (nanika ni hijou ni kuwashii; nanika o juubun ni rikai shiteiru)
"He really knows the ropes in this field of work."
"彼はこの仕事の分野で本当に経験豊富だ" (kare wa kono shigoto no bunya de hontou ni keiken houfu da)
a small but essential part of a large system
to do something secretly or deceitfully against someone
to lose control or fail when under stress
to suddenly become very nervous or afraid
to show kindness and affection to others
to feel stressed or anxious due to responsibilities or expec...
