generation time短语⁶³⁴⁵⁵ 基本例句 世代时间,增代时间,寿命,产生寿命 The ancestry of pedigree pooches is well recorded, their generation time is short and their litter size reasonably large, so there is plenty of material to work with. 有关纯种狗祖先的记载相当完备,他们寿命短体型大的特点为研究提供了大量的素材。 ecocn