George struggled wildly, going under and resurfacing at regular intervals.乔治疯狂地挣扎，不断在水面上浮浮沉沉。Make a point of backing up your files at regular intervals.一定要定期备份文件。The cartridge must be replaced at regular intervals.弹药必须定时...
They attempted in vain to modernise these antiquated industries.他们企图使这些陈旧的工业现代化,结果劳而无功.The kitchen now is a dark cavern, with an antiquated black stove in a corner.厨房现在黑洞洞的，角落里有只破旧的黑色炉子。Many factories are so antiquated t...