1. concluding state of pregnancy; from the onset of contractions to the birth of a child;

   "she was in labor for six hours"
   

2. use of physical or mental energy; hard work;

   "he got an A for effort"
   "they managed only with great exertion"
   

1. work hard;

   "She was digging away at her math homework"
   "Lexicographers drudge all day long"
   

1.艰苦劳动;难题
You can refer to unpleasant hard work or difficult problems astravail .

e.g. He did whatever he could to ease theirtravail.
他为减轻他们的辛劳做了力所能及的一切。

1. 阵痛：traumatize 损伤 |travail 阵痛 | travel agency 旅行社

2. travail是什么意思

2. 艰苦的努力：trauma 外伤 |travail 艰苦的努力 | travel document 旅行文件

3. travail的意思

3. 工作：aimer 喜爱,爱好 |travail 工作 | rentrer 进来

4. 艰苦劳动,痛苦：traumatic 造成精神创伤的,令人痛苦而难忘的 |travail 艰苦劳动,痛苦 | travelogue 旅行见闻,游记