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有关yet的用法Because many of the minerals found on the ocean floo

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/12 06:49:11
有关yet的用法
Because many of the minerals found on the ocean floor are
still plentiful on land,where mining is relatively inexpensive,
mining the ocean floor has yet to become a profitable enterprise
这句话的准确翻译是什么?
has yet to become是表达否定么?
因为在海底发现的许多矿石种类在陆地上产量甚丰,
开采成本也相对较低,因此海底开采还不是有利可图的产业.
have yet to ,表示 还未...