久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

大自然最讓人驚嘆的是它的無限多樣性。The most amazing thing about nature is its infinite variety.它的發(fā)電成本要比核電站低。It will produce electricity more cheaply than a nuclear plant.發(fā)現(xiàn)問題后，如何克服它的問題又出現(xiàn)了。Having identified the problem, the question aris...

“它的”的英語可以翻譯為：its，thereof ...