The bomb threat was made by an anonymous caller. 炸弹恐吓来自一个匿名电话。
a witness who wished to remain anonymous 不想透露姓名的证人
an anonymous phone call/letter 匿名电话/信
👨🏻🏫 Mr. Ng 麥美倫詞典 📚 – macmillan.mister5️⃣.net切換為繁體中文