You might remember the meaning of the character 督 with this easy mnemonic:
There is one (一) small (小) camera situated at that junction (⺊), that supervises ongoing traffic. I have been ticketed again (又) and again for speeding because of that camera. It's like an all-knowing eye (目).
Using mnemonics to remember the meaning of Chinese characters like has a huge impact on how long to learn Mandarin it takes.