🧩 词语组成解析
spring
[sprɪŋ]
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;
n. 山黧豆
🗣️ 情景例句
you need to work at it, Grandpa.
你得常练它， 爷爷。
Mr. Ken Robert comes to us from the University of Kentucky where he is majoring in economics.
罗伯特.金先生来自肯塔基大学，主修经济学。
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.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。