大学英语词汇短语释义解析及例句 pine bark
大学英语词汇短语释义解析及例句 pine bark
释义：
pine bark 松树皮
例句：
Its “green bottle” is composed of switch grass, pine bark and corn husk.
这种“绿色瓶”是由柳枝稷，松树树皮，玉米糠为原料制成的。
The bottle is made from switch grass, pine bark, corn husks and other materials.
这个瓶子由柳枝，松树树皮和玉米秸秆以及其他的材料制成。
In the western part of the US, pine bark beetles have thrived, partly because of changing temperatures.
