VOA慢速英语1500基础单词例句z

zero [the number meaning none or nothing]
One minus¹ one equals zero.

zoo [a place where animals are kept for the public to look at and study]
We saw the new panda at the zoo.

1 minus   

n.负号；adj.减的，负的，阴性的；prep.减，缺

参考例句：

• The temperature was minus 30 degrees.气温为零下30度。
• He seems to have mistaken a minus for a plus.他似乎把负号误作正号了。