Sacral triangle
[医] 骶骨三角
🧩 词语组成解析
a. 祭典的, 圣礼的, 神圣的, 骶骨的\\n[医] 骶骨的
🗣️ 情景例句
I frankly don't know what to do about it.
我真不知道该怎么解决。
By falling we learn to go safely.
吃一堑，长一智。
and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.
因此，尽管制造这些工具的人的骨头早已荡然无存，但远古时代的石头工具却保存了下来。