![Germs(細菌)areeverywhere.Youcan’tseethem,buttheyareonyour...]( "Germs(細菌)areeverywhere.Youcan’tseethem,buttheyareonyour...")
- 問題詳情：Germs(細菌)areeverywhere.Youcan’tseethem,buttheyareonyourdesk,onyourcomputer,andevenintheair!Likepeople,germsmovearoundtheworld.Theyflywithusonplanes.Whenfood,clothes,andotherthingstravelaroundtheworld,germstravel,too.Somegermsaresafe,butsom...
- 22481
中文谷