動詞 ail:

1. be unwell, ill, or ill disposed
   同義詞：ail
2. cause bodily suffering to and make sick or indisposed
   同義詞：afflict, trouble, ail, pain

形容詞 ailing:

1. somewhat ill or prone to illness
   同義詞：indisposed, peaked, poorly, sickly, unwell, under the weather, seedy

1. The ailing old man kept puffing out a "Thank you" as I supported him home.
   當我扶著那個有病的老人回家時，他不斷氣吁吁地說“謝謝你”。
2. That child is ailing.
   小孩生病了。
3. Chronically ailing; sickly.
   體弱的慢性疼痛的; 易生病的