There are tiny amounts of uranium residue in coal; those trace residuals have more energy potential than all the coal itself.
煤炭中有微量的铀残留物；而这些微量残留所蕴含的能量比所有的煤炭本身还要多。
2
Thought here, and my heart too happy to turn over the last few days displeasure to find out, let the wind dry them blown away, until not a trace of residue.
想到这里，心里忙不迭地把连日来的不悦找出翻开，让风把它们吹干吹走，直到一丝也不残留。
3
The trace pesticide residue methyl-parathion was detected using SERS.