专心: to concentrate, absorption, concentration, engrossed...
答案: answer, solution...
女生: schoolgirl, female student, girl...
看待: to look upon, to regard...
虽然: although, even though, even if...
一头: one head, a head full of sth, one end (of a stick), one side, headlong, directly, rapidly, simultaneously...
放射: to radiate, radioactive...
是: is, are, am, yes, to be...
住户: household, inhabitant, householder...
赛跑: race (running), to race (running)...
