有两个一般类型的疟疾：良性和恶性。
There are two general types of malaria: benign and malignant.
先前的研究表明嫉妒分良性和恶性的。
Previous research found jealousy could be divided into benign and malicious envy.
婴儿和儿童期相对小剂量照射增加良性和恶性甲状腺瘤危险。
Relatively small doses of radiation during infancy and childhood increase the risk of developing benign and malignant thyroid neoplasms.
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