Birch bark
桦树皮
🧩 词语组成解析
birch
[bə:tʃ]
n. 桦树，桦木;（鞭打用的）桦条;
vt. （用桦条）抽打，鞭挞;
bark
[bɑrk]
vi. 吠叫;厉声说话;
vt. 大声喊出;厉声说出;
n. 犬吠声;似吠声;树皮;
🗣️ 情景例句
If the owners don't claim the dog in forty-eight hours,
如果狗的主人在四十八小时内不认领，
This is a radio.
这是一台收音机。
Knowledge began to increase as soon as the thoughts of one individual could be communicated to another by means of speech.
人一旦能用语言同别人交流思想，知识的积累便开始了。