The challenge was in preparing test scripts that could send up to 8,000 (100 per thread for 80 threads) randomly selected request messages.

相应的挑战是准备测试脚本可以发送多达8000个(对于80个线程，每个线程100个)随机选择的请求消息。

youdao

Who cares if I randomly send him or her elsewhere in the array?

就算我把他或者她排在序列中的其他位置，又有谁会在意呢？

哈佛公开课 - 计算机科学课程节选

One particularly troubling possibility (not yet confirmed) is that the virus may randomly send your own Word documents to others.

CNN: How to protect yourself against Melissa