ethenoid resin(s)

例句：

1. 1. The ancientEgyptians used ethenoid resinto make their mummies.
   古埃及人用石髓树脂制作木乃伊。
2. 2.Ethenoid resin is a valuableresource for the study of fossils.
   石髓树脂是研究化石的重要资源。
3. 3. Theancient Egyptians believed that ethenoidresin had magical properties.
   古埃及人认为石髓树脂具有神奇的属性。