Indeed they can have a delightful surprise when they find something useful which they did not know they owned.
确实，一旦无意之中从自己的收藏品中找到某件有用的东西时，可以给人一种惊喜的感觉。
新概念英语第三册
Lesson 59 Collecting
📚 句中词汇解析
从本句中提取的重要词汇
vt. 使惊奇;突袭;意外发现;
n. 惊喜，惊奇;意外的事;
💡 sur突然+prise拿住，抓住→突然被抓住→吃惊
"The conjunction of low inflation and low unemployment came as a very pleasant surprise."
低通货膨胀与低失业的同时出现是一大惊喜。
近义：maze, astonish, astound, stagger, startle, daunt
反义：aboulia, apathy, impassiveness, impassivity, indolence, informality
adj. 有用的，有益的，有帮助的;令人满意的;
💡 use用+ful可…的” →有用的
"The memory expansion cards are useful adjuncts to the computer."
内存扩充卡是计算机很有用的附件。
近义：helpful, assistive, available, profitable, purposive, serviceable
反义：idle, inane, ineffective, insignificant, lousy, needless
adv. 的确，确实，实在;实际上，真正地;真的，真是;甚至;
💡 在行为（deed）事实里（in）即 确实
"The actual demands set out in the document are small beer indeed."
文件中陈述的实际要求确实是无关紧要的.
近义：assuredly, absolutely, really, verily, certainly, yea
反义：likely, maybe, perchance, perhaps, plausibly, possibly
adj. 令人非常高兴的，讨人喜欢的;令人愉快的;宜人;
"A delightful guide was my guardian angel for the first week of the tour."
令人愉快的导游是我第一周旅行的守护神。
近义：appetizing, lovable, lovely, luscious, palatable, pleasurable
反义：antipathetic, ingrate, loathsome, offensive, rough, surly
v. 发现;找到;查明;发觉;
n. 发现物;被发现的人;
💡 翻的(谐音): 找东西是要“翻的
"We searched in all quarters but still couldn't find it."
我们到处寻找,但仍没能找到.
近义：learn, realize, locate, perceive, sense, spot
反义：ignore, neglect, overleap, overlook, overrule, pass