drop by/in/round; drop in on somebody; drop into something: to pay an informal visit to a person or a place 顺便访问;顺便进入
Drop by sometime. 有空儿来坐坐。
I thought I'd drop in on you while I was passing. 我曾想路过时顺便来看看你。
Sorry we're late─we dropped into the pub on the way. 对不起,我们迟到了 我们半路上顺便到酒馆坐了坐。
Prospect: the chances of being successful 成功的机会;前景;前途 plural ~ (for/of sth)
good job/employment/career prospects 美好的工作/就业/事业前途
At 25 he was an unemployed musician with no prospects. 25 岁的他是个没有工作、前途渺茫的乐师。
Long-term prospects for the economy have improved. 长期的经济前景已有所改善。
What are the prospects of promotion in this job? 做这份工作有多少晋升的机会?
Concern: a feeling of worry, especially one that is shared by many people (尤指许多人共同的)担心,忧虑 uncountable countable ~ (about/for/over sth/sb) ~ (that…)
There is growing concern about violence on television. 人们对电视上充斥暴力内容的忧虑日益加重。
She hasn't been seen for four days and there is concern for her safety. 她已四天不见踪影,大家对她的安全很担心。 The report expressed concern over continuing high unemployment. 报告表达了对失业率居高不下的忧虑。
There is widespread concern that new houses will be built on protected land. 人们普遍对在保护区修建新的房屋感到忧虑。
Paid holiday:带薪休假