How do you think I got all these melanomas in the first place ?不然你们认为我这黑素瘤是如何得来的 呢 ?Irregularly shaped brown or blue spots in the nail bed can be melanomas.甲床上不规则的棕色或蓝色点可能是黑索瘤....
结核菌素检查(的反应结果)是阳性的.The tuberculin test was positive.公牛, 公羊, 国王和男演员都是阳性的.Bull, ram, king and actor are masculine.对疑似阳性的克隆经EcoR与Hind双酶切分析.Suspected positive clones were digestedwith EcoR I and Hind III....
他们围着老师的椅子站成半圆形回答问题。They stood in a semi-circle round the teacher's chair and answered questions.摆成半圆形的椅子a semicircle of chairs这个村庄是由半圆形的茅舍组成的.The village was formed of semicircle huts....