Usually pronounced /'wa?l/ for meaning 4. The form whilst is also used in formal or literary English, especially British English. 义项4在句中通常为重读。正式及文学语言中亦使用词形whilst（尤见于英国英语）。
英英释义
1.a period of indeterminate length (usually short) marked by some action or condition
e.g. he was here for a little while I need to rest for a piece a spell of good weather a patch of bad weather
