字母組合“ai”在重讀音節中的讀音壹般是雙元音音標/ei/的讀音，而讀音為/ei/的字母組合“ai”之後緊接字母“r”時，會產生讀音變化：/ei/ + /?/ = /ei?/ → /e?/,因此字母組合“air”的發音為/e?/。
字母組合“air”的發音為/e?/的單詞有：air, hair,?chair, pair (配成雙)...?
/e?/ /e?/ /e?/?
Whose hair?is yellow?
Mary’s hair?is yellow.
/e?/ /e?/ /e?/
Whose chair?is blue?
Dad’s chair?is blue.
/e?/ /e?/ /e?/
Whose shoes are these?
They are Mom’s.
Let me pair?them up.
currents of warm?air
暖氣流
牛津詞典
I kicked the ball high in/into the?air?.
我把球高高地踢到空中。
牛津詞典
Spicy smells wafted through the?air?.
空中飄來壹陣陣辛辣的氣味。