zeal， 表示“热心”
同根普通词汇：要了解
zeal [zil] n. 热心，热情，热忱
举例
Zeal without knowledge is the sister of folly.
【谚】无知的热情近乎愚蠢。
zealous [zels] a. 热心的，热情的
举例
The doctors were zealous in their efforts to ensure the survival of premature babies.
医生们在努力保证早产婴儿生存下来方面的热情很高。