Preambulate
vi. 作序言
🗣️ 情景例句
Many people believe that GM food is not good for your health.
许多人认为基因改良食品对健康有害。
It never rains but it pours.
祸不单行。（不鸣则已，一鸣惊人。）
it is now possible not only to locate a shoal but to tell if it is herring, cod, or other well-known fish, by the pattern of its echo.
不仅能够确定鱼群的位置，而且可以根据鱼群回声的特点分辨出是鲱鱼、鳕鱼，这是人们所熟悉的其他鱼。