Recoiling in pain, I'd scrape my back or arms on the scaly tree bark.

我疼得直往后缩，后背或胳膊被粗糙的树皮刮伤。

TreeOpaque: terrain engine tree bark.

地形引擎中的树皮。

The paper was made from maple tree bark.

纸张是由枫树的树皮制成的。

Tree bark is used to make many kinds of medicine.

树皮可用来制作很多种药。

Soon I had this idea to coat the facade with tree bark planks.

而后我的想法是给这座建筑披上树皮外衣。