词汇	present a threat to
释义	present a threat to 对…构成威胁
随便看	unconventional children unconventional co-deposition unconventional collocations unconventional cross-section Unconventional CT unconventional decision-making unconventional design Unconventional developing technique unconventional difference method unconventional dispatching unconventional electric detecting method unconventional emergency unconventional energy unconventional-energy unconventional energy resources unconventional enjoyment Unconventional Explanations of Old Word unconventional expression unconventional fossil energy resources unconventional foundation unconventional fractionation radiotherapy unconventional gas unconventional-gas unconventional gas reservior unconventional gas system