Trach
abbr. trachea 气管; tracheation （节肢动物）气管; tracheal 气管的; tracheate （节肢动物）有气管的
🗣️ 情景例句
Good-bye. Take care of yourself.
多多保重，再见。
How many pieces are you going to order?
你要订几张？
The undulating waves of the open sea are generated by three natural causes:
海浪是由三个自然因素形成的：