It is important that the malignant tumour be removed as thoroughly as possible in surgery to avoid its metastasis and recurrence.
重要的是手术时恶性肿瘤的切除应尽可能彻底，以免转移和复发。
The waste water from dye production, which contains carcinogenic and teratogenic compounds, the toxicity cannot be removed thoroughly by bioprocessing.
染料生产过程的废水，其中含有致癌、 致畸的有毒物质，通常需经生化处理后才排放。
The margin of temperature rising is very small. As a result, the welding traces on product surfaces can be alleviated rather than removed thoroughly.
升温幅度较小，制品表面的溶接痕只能得到减轻而无法消除。
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