Plumbers
n. 管子工, 水暖工( plumber的复数形式 ); [美][口]（防止泄密的）堵漏人员
🗣️ 情景例句
Tongue muscles'training is of great importance in learning any foreigh language.
口腔肌肉训练在学习任何语言时都是非常重要的。
I can hardly wait to see the new comet.
我急不可待地要见到新彗星的出现。
Are these bags heavy? No, they're light.
不，是轻的。