Noun:

1. variety of kale having smooth leaves

collarn.衣领；项圈；[机]轴环vt.抓住；为 ... 戴上项圈；为 ... 上领子collar roof三角屋架collar head凸缘头collar bone锁骨collar cell襟细胞collar bush主轴套, 轴环套,垫在下面的开口环collarectten.女用围巾；女用领巾collar stop环形挡块collar clip领钩collar beamn.系梁collar bolt环螺栓

1. Southerners in the U.S. prefer collard greens.
   美国的南方人喜欢羽衣甘蓝。