您要查找的是不是：
- 非洲棱背泥龟Carinatus African keeled mud turtle
- 帐篷tent
- 龟tortoise
- 背板backboard
- 背的neural
- 把这些单词背熟。Learn these words off by heart.
- 棱柱prism
- 搭帐篷tilt
- 龟壳turtle shell
- 棱形prismatic
- 背靠back on
- 神龟shrine
- 我们用桩子固定帐篷。We anchored the tent with pegs.
- 背痛backache
- 三棱柱triangular prism
- 龟兔赛跑the race between tortoise and rabbit
- 背胶application of gum
- 暴风雨来临之际，水手们将帐篷放下。The sailors took in sail when the tempest was approaching.
- 三棱trigone
- 背投back projection
