采用水质分析法对水化学类型进行判别，从而找到了水源，确保了安全生。
This paper presents water content analyse to help find water source and insure safety.
为了实现这一点，一种不同类型的化学已经形成。
In order to do so, a different type of chemistry has been formulated.
有四种主要的癌症治疗类型：外科、放射治疗、化学治疗和免疫治疗。
There are four major types of cancer treatment: surgery, radiation therapy, chemotherapy, and immunotherapy.
有四种主要的癌症治疗类型：外科、放射治疗、化学治疗和免疫治疗。
There are four major types of cancer treatment: surgery, radiation therapy, chemotherapy, and immunotherapy.
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