定期: fix a date regular; at regul ...保: defend; protect续: continuous; successive收获: gather in the crops; harvest ...定期持续收获: sustained periodic yield持续收获: sustained yield永续收获: sustained yield永续收获基础: sustained-yield basis永续收获经营: sustained-yield management定期保单: police à terme; term policy; time policy定期保费: regular premium定期保险: fixed term insurance; fixed-term insurance; term life insurance; time insurance定期保险单: period; period policy; term policy; term of policy; time policy定期保养: regular maintenance最大持续收获量: maximum sustainable yield最大可持续收获量: maximum sustained yield定期保单定期保险单: time policy定期收获量: periodic yield船舶定期保险: time hull insurance定期保险年金: annuity certain定期保险展期: renewal term insurance人寿定期保险: endowment insurance定期保养承办商: term maintenance contractor定期保养完成率: fulfillment ratio of periodic service; fulfillment ratio of repair plan集装箱定期保险: container time insurance