继父: stepfather...
科普: popular science, popularization of science, abbr. of...
总统: president (of a country)...
轨道: track (for trains etc), orbit (of a satellite), a person's established path in life, desired trajectory (of a business or other endeavor), (audio engineering) track, (quantum mechanics) orbital...
其余: the rest, the others, remaining, remainder, apart from them...
放弃: to renounce, to abandon, to give up...
防汛: flood control, anti-flood (precautions)...
挑战: to challenge, challenge...
无动于衷: aloof, indifferent, unconcerned...
一身: whole body, from head to toe, single person, a suit of clothes...
