copal

n.

柯巴脂（一种坚硬透明的树脂，用作制漆的原料）；

1. He started carving expressive animals such as frogs, coyotes and rabbits out of copal wood.
   他开始用柯巴脂来雕刻一些生动的动物，比如青蛙，山狗和兔子之类的。

COPAL: An adaptive approach to context provisioning
A fossil stingless bee from copal
Effectiveness of copal resin varnish under amalgam restorations
A study of amber and copal samples using FT-Raman spectroscopy
Copal Bone Cement Is More Effective in Preventing Biofilm Formation than Palacos R-G
A fossil stingless bee from copal (Hymenoptera: Apidae).
Amber and copal: Pyrolysis gas Chromatographic (PyGC) studies of provenance
Raman spectroscopy of different types of Mexican copal resins.
Actividad antimicrobiana de un extracto fluido al 80 % de Schinus terebinthifolius raddi (copal)
Ageing behaviour and analytical pyrolysis characterisation of diterpenic resins used as art materials: Manila copal and sandarac