More pet shops have sprouted up and there is more commercialbreeding, For a small island, we have tons of pet shops and breeders.
本地越来越多宠物店如雨后春笋冒起，商业性质的宠物饲育也越来越多。
2
Sealed, air-conditioned buildings and other closed spaces utilizing circulated forced air, like commercial airliners, are also criticized as breeding grounds for communicable diseases.
空调化的封闭建筑及其他象商业客机等使用循环压力送风的封闭空间，也被批评为传染性疾病的滋生地。
3
It can be used in plant breeding, tissue culture and molecular biology research, and can be used for various commercial purposes.