Using google translate with goldendict, more https://viblo.asia/p/ubuntu-know-your-tools-MVpvKygQeKd#3-google-translate-in-goldendict-2

goldendict-google-trans.php

<?php
$text = $argv[1];
$postdata = http_build_query([
    'q' => $text,
]);

$opts = [
    'http' => [
        'method' => 'POST',
        'header' => 'Content-type: application/x-www-form-urlencoded',
        'content' => $postdata,
    ],
];

$context = stream_context_create($opts);
$url = 'http://translate.googleapis.com/translate_a/single?client=gtx&sl=auto&tl=en&dt=t&ie=UTF-8&oe=UTF-8';
$resultText = file_get_contents($url, false, $context);
$resultText = preg_replace('/,+/', ',', $resultText);

$results = json_decode($resultText);
if (is_array($results) && count($results) > 0) {
    foreach ($results[0] as $result) {
        echo str_replace("\n", '<br>', $result[0]);
    }
}

echo "<hr><a href='https://translate.google.com/#auto/en/$text'>Open in Google Translate</a>";

goldendict-google-trans.sh

# From http://www.webupd8.org/2016/03/translate-any-text-you-select-on-your.html
#!/usr/bin/env bash
text="$(xsel -o)"
translate="$(wget -U "Mozilla/5.0" -qO - "http://translate.googleapis.com/translate_a/single?client=gtx&sl=auto&tl=en&dt=t&q=$(echo $text | sed "s/[\"'<>]//g")" | sed "s/,,,0]],,.*//g" | awk -F'"' '{print $2, $6}')"
echo "$translate"

response-example.json

[
    [
        ["We updated the voice blog \"Monsters at 3 o'clock AM\".\n\n","ボイスブログ「午前三時の独壇場」を更新しました。\n\n",,,3],
        ["This week is the 100th entrance","今週は第参百弐拾参場",,,3]
    ],,"ja",,,,0.96649998,,[["ja"],,[0.96649998],["ja"]]
]