例句與造句

1. European annual wild lettuce having prickly stems ; a troublesome weed in parts of united states
   長有帶刺莖的歐洲一年生野生萵苣；美國部分地區(qū)一種有毒雜草。
2. It's difficult to find troublesome weed in a sentence. 用troublesome weed造句挺難的