您要查找的是不是：
- 聚-L-树酯poly-L-resin
- 聚亚甲胺树酯resinat; exorbin
- 酯ester
- 聚类clustering
- 树袋熊koala
- 聚糖polysaccharide
- 树种tree species
- 乙酸乙酯ethyl acetate
- 聚四氟乙烯polyfluortetraethylene
- 柠檬树lemon
- 酯化esterify
- 重聚reunion
- 丙烯酸酯acrylic ester
- 种树plant trees
- 物以类聚birds of a feather flock together
- 内酯lactone
- 杉树redwood
- 壳聚糖chitosan
- 乙酯methyl ethyl oxalate
- 砍树felling
