bicentennial
adj
happening once in two hundred years; marking a bicentenary 二百年一次的; 二百周年纪念的
a bicentennial anniversary/celebration 二百周年纪念活动[庆典]. bicentennial, n = bicentenary.
🗣️ 情景例句
There's nothing more joyous than the arrival of a new baby.
没有任何事能比新生儿的到来更令人喜悦的了。
What did he say in the letter?
他在信里说什么了?
Because the gravity on the Moon's surface is only a sixth of Earth's