0 New HSK word(s):
0 Old HSK word(s):
双星 [shuang1 xing1] Doppelstern (S, Astron)
双星系统 [shuang1 xing1 xi4 tong3] Doppelstern
双星藻目 [shuang1 xing1 zao3 mu4] Jochalgen (Bio)