But even mulch has its limits. Natural resource specialists point out that weeds can be transported in mulch. This is also true of soil, grain, hay and animals.

但是，地膜也有其局限性。自然资源专家指出，杂草可以在地膜里传播，还可以通过土壤，谷物，干草和动物传播。

youdao

Thanks for your kind suggestion. but my agency asked me to rematch an American family. oT hay said some APs failed on this point in the past.

谢谢你的建议，我也不知道，现在中介要求我重新匹配家庭，我的去啊，中介说以前就有AP因为华人家庭被拒。

youdao