Eco
abbr. 电子耦合振荡器（Electron-Coupled Oscillator）；环境控制组织（Environmental Control Organization）；经济合作组织（Economic Cooperation Organization）
🗣️ 情景例句
But Dad was so exhausted when he came home from work.
但爸爸工作回来时已经累得不得了了。
A man becomes learned by asking questions.
要长学问，就得多问；多问则业精。
and often are foolish enough to let the adolescents see that they are annoyed.
而且愚蠢地让孩子看出自己的烦恼。