invariable
adj
never changing; always the same; constant 永不变的; 始终如一的; 恒定的
an invariable pressure, temperature, amount 恒定的压力、 温度、 数量
a noun with an invariable plural 复数形式不变的名词
his invariable courtesy 他那一贯的谦恭有礼.
🎯 考研助记
in(否定)+variable(变化的)- 不变的
🗣️ 情景例句
Thank you, sir.
谢谢您,先生。
Tom's been feeling blue ever since his divorce.
自离婚以来,汤姆一直很忧郁。
They were in fashion last year and the year before last.But they're not in fashion this year.