intermittently

adverb [方式副词]间歇地

Deane continued diving on the site intermittently until 1840, recovering several more guns, two bows, various timbers, part of a pump and various other small finds.
迪恩继续间歇性地在这个地方潜水直到1840年，期间又找到了几支枪、两张弓、各种木材、一个水泵的一部分和其他各种小物品。