Cal-red
[化] 鈣指示劑; NN指示劑; 鈣紅
?? 詞語組成解析
[化] 計算機輔助學習
red
[red]
adj. 紅色的;（臉）漲紅的;燒紅的;紅頭發的;
n. 紅色;紅衣服;紅顏料;紅葡萄酒;
??? 情景例句
You and Mom haven't had dinner together with us
你和媽媽沒有和我們一起吃晚餐
A faithful friend is hard to find.
益友難得。
Indeed they can have a delightful surprise when they find something useful which they did not know they owned.
確實，一旦無意之中從自己的收藏品中找到某件有用的東西時，可以給人一種驚喜的感覺。