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come across somebody/something
to meet or find somebody/something by chance (偶然)遇见,碰见,发现
I came across children sleeping under bridges.
我偶然发现睡在桥下的孩子。
She came across some old photographs in a drawer.
她在抽屉里偶然发现了一些旧照片。
random:done, chosen, etc. without somebody thinking or deciding in advance what is going to happen 随意的;任意的;未经事先考虑的;胡乱的
the random killing of innocent people
对无辜者的随意杀戮
a random sample/selection(= in which each thing has an equal chance of being chosen)
随机抽样／选择
The information is processed in a random order.
信息是按随机顺序处理的.
entry:an item, for example a piece of information, that is written or printed in a dictionary, an account book, a diary, etc. 项目;条目;词条;账目;记录
an encyclopedia entry
百科全书的一个条目
There is no entry in his diary for that day.
他的日记里没有那天的记录.
