Yuck ! I wonder when was thelast time he got his ass cleaned .
真讨厌！我真想知道他上次是什么时候擦的屁股。
" Theoretically , there 's nothing wrong with this , " powell said . " It could be quite safe to eat , but I 'm sure there 's a yuck factor there , " he said .
For all the talk of superorganisms ( and despite the yuck factor of what is being moved from one body to another ) , transplanting a microbiome is far easier than transplanting a heart or a kidney .
