鱄

专 = 二 + ㇉ + ㇏ : Let's say the expert is a scientist. Also, 专 reminds me a little bit of the wheelchair symbol. Thus I choose a scientist in a wheelchair as symbol for 专.

专 = 二 + ㇉ + ㇏ : In front of the anthill, the scientist and Julian Giant Squid are focused on one thing: Electrifying the wheelchair of the scientist. Deeply concentrated they connect a capacitor to the wheelchair, which indeed starts to move a little.

鱼 = ⺈ + 田 + 一 : Yu the Great set up a small rice field just inside the entrance of the space station, and there are some fish swimming in the rice field. The space station's crane spotted them and wants to snap one out of the rice field, but just as he was about to snatch one of them, Yu the Great hit him with a flute.