zero n. 1.[C](數(shù)字的)零：The figure 100 has two zeros[zeroes]. 100這個數(shù)字里有兩個零。2.[U]零度：It was 4 below zero this morning.今天早上的氣溫是零下4度。3.[U]零點，最低點：Our spirits sank to zero. 我們的意志消沉到最低點。

zoo n.[C]動物園：There're three zoos in the city. 這座城市有3個動物園。/ He took his children to the zoo yesterday. 他昨天帶孩子去了動物園。/ She thinks it’s wrong to keep animals in zoos. 她認為把動物關在動物園是不對的。