蚂蚁: ant...
海边: coast, seaside, seashore, beach...
重任: heavy responsibility...
出入: to go out and come in, entrance and exit, expenditure and income, discrepancy, inconsistent...
观测: to observe, to survey, observation (scientific etc)...
民用: (for) civilian use...
同年: the same year...
私立: private (company, school etc)...
