请问：the oceans were open to sail中open为什么不加ing?

请问：the oceans were open to sail中open为什么不加ing? the oceans were open to sailor中文意思是什么? so what happens here is we have a morden day analogy for what the oceans were a like in terms ofboths the chemistry and the biology.翻译? There are five oceans on the earth. 英语翻译请问英语翻译题,The atmosphere is as much a part of the earth as are its soils and the water of its lakes,rivers and oceans 请问:you were wanted on the phone 翻译：I've crossed the oceans of time 首字母：Whales live in the o_______.ocean还是oceans oceans we keep must the clean.怎么连词成句. I`ve crossed the oceans of time to find you find in oceans you starfist can the 连词成句 people also ____ food from the oceans(get) Which two oceans does the Panama Canal link? 高中英语必修3 unit4 the oceans and seas完整句：the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.the oceans and seas.两次都是不可数,为什么还加S? The oceans are very important to all animals on the earth.(改为感叹句)____ _____ the oceans are to all animals on the earth! The oceans take up the greater part of the earth’s surface.请翻译 As the oceans have been overfished,fish has become more and more expensive.请问fish后为什么跟has,不是应该跟have吗,因为fish这里应该是复数. 请问如何翻译Half of the candidates were voted out.