Small-scale fishers and farmers are the unsung heroes of sustainable aquaculture.
解释:兵器既不齐全又不锋利,实质上和没有兵器一样!
相信我,这世上没有“他们”。(U2《Invisible》的歌词:“There's no them / There’s only us”)
Algebraic geometry is the study of zeros of polynomials.