单词	nontrivial issue
释义	nontrivial issue 重要的问题
随便看	large-sized parts large-sized photographic microscope large-sized pit large-sized plant large-sized public building large-sized pulping plant large-sized pumping station large-sized pumps large sized pump station large-sized rail road maintenance machinery large size drill large-size drill large-sized seamless steel tube large-sized section large-sized shaft-part large-sized shaft parts large-sized sintering strand large sized sinter machine large-sized soil animal large-sized soil samples large-sized sports venue Large-sized SSAWpipe Large-sized SSAW pipe large-sized state-owned enterprises large-sized straight welded pipe