c. 1400, from Old French obligatoire "creating an obligation, obligatory," and directly from Late Latin obligatorius "binding," from obligat-, past participle stem of obligare (see oblige).
实用例句
1. His lips curved up in the obligatory smile, acknowledging the compliment.
他嘴边礼节性地挤出一个微笑，以示对称赞致谢。
来自柯林斯例句
2. There was all the usual humbug and obligatory compliments from ministers.
全都是些部长们常说的骗人鬼话和少不了的奉承恭维。
来自柯林斯例句
3. She was wearing the obligatory sweater and pearl necklace.
她穿着那件经常穿的毛衣，戴着那串惯常戴的珍珠项链。
来自柯林斯例句
4. It is obligatory for all employees to wear protective clothing.
所有员工必须穿防护服装。
来自《权威词典》
5. It is obligatory on every citizen to safeguard our great motherland.
