1.horseback n. 马背 adv. 在马背上地 adj. 在马背上的,臆断的
We continued up the mountain on horseback.
我们骑著马继续上山.
2.extort v. 勒索, 敲诈, 强要
Don't extort money from others.
勿强拿别人的钱。
3.prognostic n.预兆
He regards the bad weather as a prognostic of failure.
他将坏天气视为失败的预兆。
4.intermission n. 中止, 中断, 停顿
During the intermission, let's go out for some fresh air.
幕间休息时, 我们出去呼吸呼吸新鲜空气吧。