这只昆虫的腿上长满了刺。

The insect's leg is covered in ___spines.

小心别碰到仙人掌上的刺。

Be careful not to touch the ___spines on the cactus.

长时间低头玩手机会给你的脊椎带来压力。

Looking down at your phone for a long time can put pressure on your ___spine.

这些书的书脊上都印着作者的名字。

The authors' names are printed on the ___spines of these books.