Stern also studies and observes the behaviour of babies.斯特恩还研究观察婴儿的行为。He observes carefully but says little.他总是仔细观察,很少说话.He observes keenly but says very little.他观察敏锐,却很少发言....
The endosperm of the nut owes its marked degree of astringency.坚果的胚乳由于存在丹宁,所以有显著的涩味.The chalazal parts of the endosperm containing free nuclei forms several lobes.包含游离核的合点端胚乳部分形成几个裂片.Heat - denatured wheat endosperm prev...