🧩 词语组成解析
bird
[bɝd]
n. 鸟，禽;<俚>少女，姑娘，人，家伙，东西;<口>飞机，火箭，导弹;
vi. 观察和辨认鸟;捕鸟，打鸟;
🗣️ 情景例句
He came down with the flu, so he didn't go to work.
他感冒了，所以没去上班。
His necktie is behind the book case.
他的领带在书架后面。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
从测定海深到测定鱼群，这一进展比较容易。