If ichthyosaurs did(此处did表示强调) evolve an anti-decompression means,they clearly did so(so指的是an anti-decompression means) quickly—and,most strangely,they lost it afterwards.But that is not wh...这个高中的阅读理解,我就是要翻译。你却交给我。呵呵结构看明白了吗?如果看懂了,生词查
字典就可以了。也锻炼你自己的翻译能力了。