接触的细胞的原生质体通过原生质连丝连接成一体.The protoplasts of attached cells are connected and integrated by plasmodesmata.果胶物质分成原生质果胶, 果胶和果胶酸.The pectic substances can be classed protopectins, pectins and pectin acids.每个细胞都具有核,细胞核位于原生质中.Ea...
In this economic climate new ideas were few and far between.在这种经济环境下，新想法极为罕见。Successful women politicians are few and far between.成功的女政治家凤毛麟角。People who work as hard as you are few and far between!像你这样努力工作的人真是太少了!...