"why don't we" meaning in 英語

{
  "lang": "英語",
  "lang_code": "en",
  "pos": "phrase",
  "pos_title": "成句",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "英語 例文あり",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              0,
              12
            ]
          ],
          "text": "Why don't we look for your new watch with me?",
          "translation": "私と一緒にあなたの新しい腕時計を探すのはいかがですか。"
        }
      ],
      "glosses": [
        "...するのはいかがですか。（勧誘）"
      ],
      "id": "ja-why_don't_we-en-phrase--psJnBdp"
    }
  ],
  "synonyms": [
    {
      "word": "let's"
    },
    {
      "word": "shall we"
    },
    {
      "word": "how about"
    },
    {
      "word": "what about"
    },
    {
      "word": "what do you say to"
    }
  ],
  "tags": [
    "idiomatic"
  ],
  "word": "why don't we"
}

{
  "lang": "英語",
  "lang_code": "en",
  "pos": "phrase",
  "pos_title": "成句",
  "senses": [
    {
      "categories": [
        "英語 例文あり"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              0,
              12
            ]
          ],
          "text": "Why don't we look for your new watch with me?",
          "translation": "私と一緒にあなたの新しい腕時計を探すのはいかがですか。"
        }
      ],
      "glosses": [
        "...するのはいかがですか。（勧誘）"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "let's"
    },
    {
      "word": "shall we"
    },
    {
      "word": "how about"
    },
    {
      "word": "what about"
    },
    {
      "word": "what do you say to"
    }
  ],
  "tags": [
    "idiomatic"
  ],
  "word": "why don't we"
}