🧩 词语组成解析
common
['kɑmən]
adj. 普通的;通俗的;[数学]公共的;共有的;
n. [法律]（对土地、水域的）共有权;公共用地;普通;平民;
lettuce
['letis]
n. 莴苣，生菜;<俚>纸币;
🗣️ 情景例句
and they found it to be too easy--
他们发现字太简单了，
He is unworthy to live who lives only for himself.
为己而生，生而可耻。
He must, for example, perceive an egg as a simple single solid shape,
以鸟蛋为例，观赏者必须感觉到它是一个单一的实体形态，