thornback Raja clavata

例句：

1. 1. The thornback vines were a challenge to remove from the garden.
   荆棘藤蔓是花园里难以移除的挑战。
2. 2. She had to climb over the thornback bushes to get to the other side of the fence.
   她不得不爬过荆棘灌木丛才能到达围栏的另一侧。
3. 3. The thornback roses are beautiful but also very hard to grow.
   荆棘玫瑰美丽但生长困难。