resinous exchanger

例句：

1. 1.The wood is resinous and needs to be treated before it can be used.
   这种木材含树脂，需要经过处理才能使用。
2. 2.The resinous coating protects the metal from corrosion.
   这种含树脂的涂层保护金属免受腐蚀。
3. 3.The resinous substance has a strong smell when it comes into contact with air.
   这种含树脂的物质与空气接触时会有一种强烈的气味。