🧩 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;
n. 箭头, 镞, 慈菇\\n[计] 箭头尖
🗣️ 情景例句
With a shortage of chromosomes, a developing fetus will likely grow into a child with down syndrome.
如果缺省染色体，一个处于成长阶段的胚胎可能发育成一个具有不良综合症的小孩。
One never loses anything by politeness.
有礼貌对自己不会吃亏。
Though the sound could be heard clearly, it took me a long time to react.
虽然声音听得很清楚，但我过了好一会儿才作出反应。