(rare) to go mad, to become insane / (archaic, Edo) to be extremely unusual, to be very strange or remarkable

to be concerned about, to worry about / to weigh on one's mind

[one's] concentration disperses; to be distracted

(idiomatic) to have one's attention attracted

Alternative form of 気が遠くなる

(idiomatic) to faint, to lose consciousness / (idiomatic) to be overwhelmed

(biology) being aerobic

twenty years old

the twentieth day of the month / twenty days / Short for 二十日鼠 (hatsuka nezumi): a house mouse

two-story / two-storied