所有的梨亚科是由两个远缘祖先类型双杂交演化的异源多倍体。

All the Pomoideae were allopolyploids drived from a doubled hybrid between two remote ancestral types.

youdao

摘要：梨子被澳大利亚的科学家们吹捧为“宿醉解药”，这些科学家宣称，梨不仅可降低胆固醇，而且能预防过量饮酒造成的宿醉。

ABSTRACT: the pear has been touted as a hangover cure by scientists in Australia who claim the fruit not only helps to lower cholesterol but can prevent the adverse affects of excessive alcohol.

youdao

摘要：梨子被澳大利亚的科学家们吹捧为“宿醉解药”，这些科学家宣称，梨不仅可降低胆固醇，而且能预防过量饮酒造成的宿醉。

ABSTRACT: the pear has been touted as a hangover cure by scientists in Australia who claim the fruit not only helps to lower cholesterol but can prevent the adverse affects of excessive alcohol.

youdao