Underutilization
利用不足, 未充分使用
? 同義詞
??? 情景例句
Good-bye, Mr. Carlson. Thanks.
再見， Carlson先生。謝謝。
Would you please hold the door open for me?
請您為我打開門？
They lived by hunting and by gathering roots, nuts and wild fruits.
他們靠狩獵和采集根莖、堅果和野果為生。