了解的英文的缩写为understand。
双语例句：
1.我们不完全了解大脑是怎样构成的。
We do not fully understand how the brain is organized.
2.医生对这种疾病还不太了解。
Doctors still don't understand much about the disease.
3.委员会对这个问题了解不多或根本不了解。
The committee has little or no understanding of the problem.
