单身父母扮演双亲的角色非常辛苦。Single parents cope heroically in doing the job of two people.不管孩子是生活在双亲还是单亲家庭，这种情况都会发生。This happens whether the children are in two-parent or one-parent families.双亲去世后, 小男孩由其叔叔监护.After his parents died, ...
Experiments showed Chlorothalonil and Bordeaux mixture were effective fortheir control.药效试验百菌清和波尔多液效果好,防效达90%以上,可作大面积防治选用药剂.The analysis of chlorothalonil and procymidone by GC was introduced.论述了在同一气相色谱条件下测定百菌清、腐霉利含量的方法....