This kind of training is ineffective, and wasteful of scarce resources. [+ of]
这种训练没有效率,而且是对稀缺资源的浪费。
Try to avoid wasteful duplication of effort.
尽量避免无用的重复劳动。
The law should impose penalties on companies that use energy wastefully.
法律应当严惩浪费能源的公司。
👨🏻🏫 Mr. Ng 柯林斯詞典 📚 – collins.mister5️⃣.net切換為繁體中文