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Jyutping deoi3 gap3
Pinyin duì hé

Definitions (Wiktionary)
  1. noun
    involution

對合 [对-]

Jyutping
Pinyin duì hé

Definitions (CC-CEDICT)
  1. a profit equal to the amount one invested
  2. (math.) involution
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    他们对合同很满意。
    他們對合同很滿意。
    tā men duì hé tóng hěn mǎn yì 。
    • They are satisfied with the contract.
  2. Mandarin
    Mary和Alice是一对合法结婚的同性伴侣。
    Mary和Alice是一對合法結婚的同性伴侶。
    mary hé alice shì yī duì hé fǎ jié hūn de tóng xìng bàn lǚ 。
    • Mary and Alice are a legally married same sex couple.
Examples (粵典–words.hk)
  1. Cantonese
    组织对合作抱积极态度。
    組織對合作抱積極態度。
    zou2 zik1 deoi3 hap6 zok3 pou5 zik1 gik6 taai3 dou6.
    • The group holds an active attitude towards cooperation.
  2. Cantonese
    如果上司猜忌下属嘅话,会对合作产生不良嘅影响。
    如果上司猜忌下屬嘅話,會對合作產生不良嘅影響。
    jyu4 gwo2 soeng6 si1 caai1 gei6 haa6 suk6 ge3 waa2, wui5 deoi3 hap6 zok3 caan2 sang1 bat1 loeng4 ge3 jing2 hoeng2.
    • If the boss is suspicious and jealous of the subordinates, it would be harmful to the co-operation.