🧩 词语组成解析
fern
[fə:n]
n. <植>羊齿植物，蕨类植物;
🗣️ 情景例句
No, nothing.
没有，没什么。
He's behind the times.
他跟不上时代了。
They also have the disadvantage of being an expensive form of transport.
飞机另一个缺点是昂贵。