18. The bud endo-dormancy in woody perennials, which formed during a long evolutional process, is a biological adaptability to the changes of environmental factors and different seasons.
木本植物芽的内休眠是植物经过长期演化而获得的一种对环境及季节性变化的生物学适应性,其机制较为复杂。
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19. Giving a more generalized talk about perennials and annuals, for instance, is going to be of much greater interest to these retired senior citizens than discussing plant biochemistry.
20. With annuals and perennials suffering from little to no growth, the edible category presents many opportunities for sales growth and is a highly profitable sector with increasing demand.
一年生和多年生植物基本没什么增长了,可食用植物则上大有可为,需求日益增长表明其效益可观。
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21. Although a tanking economy has pushed these hardy perennials down the list, crime is still on Britons' minds, with a third of them saying it is one of the important issues facing the country today.
22. Although a tanking economy has pushed these hardy perennials down the list, crime is still on Britons' minds, with a third of them saying it is one of the important issues facing the country today.