英国许多海滩连最起码的卫生标准都达不倒。Many of Britain's beaches fail to meet minimum standards of cleanliness.许多学生并未做好接受高等教育的充分准备。Many students are not adequately prepared for higher education.许多农民然后就会凶巴巴地把你从他们的土地上撵走。Many farmers wil...
被子植物开始时是浸沉在液体中的游离合子.Angiosperms begin as free zygotes immersed in a fluid.接合形成的合子是部分二倍体,也叫做部分合子.The zygotes formed in conjugation are partial diploids or merozygotes.不定胚与合子胚之间不能划分出明显的界限.A sharp demarcation of adventive e...