翻译词组!cooking rings fuelled by bottled gas

翻译词组!cooking rings fuelled by bottled gas 求翻译：threaded “rings” by one's teens翻译词组 ---- Must I turn off the gas after cooking? gas station翻译下 gas pockets怎么翻译 gas oxygen 怎么翻译 英语翻译COOKING CERTIFICATION BOARD OF CHINA翻译这个词组主要是不明白CERTIFIC when the phone rings 翻译 gas fugacity 怎么翻译啊? gas cooking supper 翻译中文是?