大自然最让人惊叹的是它的无限多样性。The most amazing thing about nature is its infinite variety.它的发电成本要比核电站低。It will produce electricity more cheaply than a nuclear plant.发现问题后，如何克服它的问题又出现了。Having identified the problem, the question aris...
Those in mammalian cells, the cerebrosides and gangliosides, may perform similar functions.在哺乳动物细胞中脑磷脂和神经节苷脂可能执行同样的功能.Starfish contains different types of bioactive materials, such as proteins, enzymes, steroidal glycosi...
In micrographics, a device that enlarges microimages for viewing.在缩微照相技术中, 放大图形以便观察的一种设备.She disapproved of her son's indiscriminate television viewing.她不赞成儿子不加选择地收看电视.After viewing this PNG , you notice them ( mill...