Conclusion: Galla Chinesis is one kind of effective cariostatic naturalagent.
结论：天然药物五倍子具有有效的防龋效能。
2
Tea Tree Oil: Tea Tree Oil is a naturalagent that is effective against all three categories of infectious organisms: bacteria, viruses and fungi.
茶树精油：茶树精油是一种天然药剂，能够有效对抗所有三大类感染性生物体，分有细菌、病毒、真菌。
3
It is not an outlay for the support of labour, or for the provision of implements or materials the produce of labour. It is the price paid for the use of an appropriated naturalagent.