雅思詞匯：大樹(shù)的細(xì)部結(jié)構(gòu)

treetop 樹(shù)梢;

branch 樹(shù)枝;

twig 小樹(shù)枝;

bough 大樹(shù)枝;

leaf 樹(shù)葉;

sapling 樹(shù)苗;

tree root 樹(shù)根;

bark 樹(shù)皮;

pith 木髓;

annual ring 年輪;

stump 樹(shù)樁;

trunk 樹(shù)干;

taproot 主根;

sprout 新芽