Tabulata
横板珊瑚亚纲, 床板珊瑚
🗣️ 情景例句
Biology and mathematics.
生物学和数学。
One misfortune comes on the neck of another.
祸不单行。
Houses -- often three storeys high -- were built of stone.
房子一般有3层楼高，用石块修建。