试题题干
Translate the following sentence into Chinese.
These processes have variables that can't be readily observed, so understanding them requires computers.
参考答案
试题解析
考点：variable变量；can't be readily observed难以观察的。
句子结构：句子为so连接的并列句。前半句主语为These processes have variables，that引导定语从句修饰variables。后半句为一个简单句。