His efforts were to no avail.
他徒勞無功。
I apologized repeatedly, but to little avail.
我一再道歉,但絲毫沒有奏效。
Guests should feel at liberty to avail themselves of your facilities. [V pron-refl + of]
賓客們應該可以随意使用你們的各種設施。
👨🏻🏫 Mr. Ng 柯林斯詞典 📚 – collins.mister5️⃣.net切换为简体中文