Becker nevus

例句：

1. 1.The Becker nevus on her neck is a distinctive feature of her skin coloration.
   她脖子上的贝克痣是她皮肤颜色的独特特征。
2. 2. The doctors were puzzled by the Becker nevus on his face, which had never before been seen in that area.
   医生们对他的脸上从未见过的贝克痣感到困惑。
3. 3. The Becker nevus was removed surgically, and the patient recovered quickly from the procedure.
   这个贝克痣被外科手术切除了，病人很快就从手术中恢复过来。