词汇	凹槽缝
释义	凹槽缝 fillistered groovejoint
随便看	attain linguistic proficiency attain long-term prosperity attain long-term stability and prosperity attain/make an international reputation attain maturity attainment attainment age attainment benchmark attainment discrepancy attainment factor attainment in information attainment level attainment n attainment of iron and aluminum attainment of personnel attainment quotient attainments attainment target attainment targets attainment test attainment tests attain my object attain my purpose attain neutralism through power attain one's 102nd year