Mental arithmetic
n. 心算
📖 牛津释义
mental arithmetic
calculation(s) done in the mind, without writing down figures or using a calculator, etc 心算.
🧩 词语组成解析
mental
['mɛntl]
adj. 内心的，精神的，思想的，心理的;智慧的，智[脑]力的;〈口〉精神病的，意志薄弱的，愚笨的;
n. 精神病患者;
ment思考，神智+al表形容词 → 智力的；精神的
🗣️ 情景例句
How about a lemonade break?
休息一下喝点柠檬水好吗？
After Flagstaff, we'll go to San Diego.
到佛拉格斯塔夫之后，我们去圣迭戈吧。
We can perhaps forgive those who said the moons of Jupiter were produced by Galileo's spyglass if we recall that in his day, as for centuries before, curved glass was the popular contrivance for producing not truth but illusion, untruth;
如果我们回想一下伽利略之前几个世纪期间，曲面镜一直是一种用于产生幻影而不是产生真象的把戏装置，那么我们就会原谅那些当时把伽利略观察到的木星卫生说成是伽利略用他的小望远镜变出来的人们，