He lifted the water-bottle to his lips and sipped.他把水瓶举到嘴边，小口地喝着。She unscrewed the cap of her water bottle and gave him a drink.她拧开水瓶盖，让他喝了一口。To help ease the pain, heat can be applied to the area with a hot water bottle...
That is an ironclad fact that is beyond controversy.这是铁的事实,无庸置辩.The case for testing now is ironclad.正在接受检验的这一论据牢不可破。Actually, these selection rules are not ironclad.实际上, 这些选择规则并不是严格的....