一头: one head, a head full of sth, one end (of a stick), one side, headlong, directly, rapidly, simultaneously...
杂技: acrobatics...
细胞: cell (biology)...
瑞雪: timely snow...
导航: navigation...
恶性: malignant, wicked, vicious (circle), producing evil, rapid (decline), runaway (inflation)...
起步: to set out, to set in motion, the start (of some activity)...
聋哑: deaf and dumb...
高等: high-level, higher (animals, education etc), advanced (math etc)...
心声: thoughts, feelings, aspirations, heartfelt wishes, inner voice...
