n. 春季;泉水,小溪;弹簧,弹性;跳跃;
vi. 跳,跃;突然发出或出现;发源;劈开,裂开;
vt. 突然跳出;跳过;使开裂;
adj. 春天的;弹簧的,有弹性的;
🗣️ 情景例句
No, thank you. It's too late. I really have to go.
不,谢谢。太晚了,我真的该走了。
It's up in the air.
尚未决定。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.