Trees having usually edible nuts : butternuts ; walnuts ; hickories ; pecans .

乔木科通常具有可食用的坚果；灰胡桃；胡桃；山胡桃树；美洲山核桃树。

Then we plunged down the trail into the woods alive with the hum of cicadas hanging thick in the branches of the burr oaks and hickories .

然后我们沿着小路跑进森林，耳边是刺栎树和山胡桃树的枝桠上密密麻麻的蝉们的欢叫声。