珍珠貝
Do you know where pearls come from?
你知道珍珠產(chǎn)自哪里嗎?
Expensive jewels usually come from big mines.
昂貴的珠寶通常產(chǎn)自大礦山。
However, believe it or not, pearls come from pearl oysters in the sea.
然而,信不信由你,珍珠產(chǎn)自于海中的珍珠貝。

Nowadays, we can raise pearl oysters in the seas near Korea and Japan.
如今,我們能在靠近朝鮮和日本的海中養(yǎng)殖珍珠貝。
Pearl oysters are usually 5 centimeters long and 5.6 centimeters high.
珍珠貝一般有5厘米長(zhǎng),5.6厘米高。
When we raise pearl oysters, It is very important to maintain water temparature over 10 degree Celsius.
我們養(yǎng)珍珠貝時(shí),非常重要的一點(diǎn)就是水的溫度得維持在10攝氏度以上。
來(lái)源:可可英語(yǔ) http://www.ccdyzl.cn/xiaoxue/201705/509524.shtml