google-suggestion-api.py

import urllib

URI = "http://google.com/complete/search?output=firefox&hl=en&q="

def suggest(term):
    text = urllib.urlopen(URI + urllib.quote(term)).read()
    arr = eval(text)
    return arr[1]

print suggest("python")

http://google.com/complete/search?output=firefox&hl=en&q=halle

jsonp callback
http://google.com/complete/search?output=firefox&hl=en&q=halle&callback=callMe

#import <Foundation/Foundation.h>
//... see http://www.flaviodiez.com/2013/08/json-with-objective-c/
void testGoogleSuggestion(){
    NSURL * url = [[NSURL alloc] initWithString:@"http://google.com/complete/search?output=firefox&hl=en&q=halle"];

    // Prepare the request object
    NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url
                                                cachePolicy:NSURLRequestReturnCacheDataElseLoad
                                            timeoutInterval:30];


    NSURLResponse *response;
    NSError *error;

    NSData* data = [NSURLConnection sendSynchronousRequest:urlRequest
                                    returningResponse:&response
                                                error:&error];



    NSArray* object = [NSJSONSerialization
                       JSONObjectWithData:data
                       options:0
                       error:&error];
    if(!error){
        NSLog(@"%@",object[1]);

    }else{
        NSLog(@"error: %@",error);
    }
}

海词的api比较适合做翻译。
http://dict.cn/apis/suggestion.php?q=halle

http://en.wiktionary.org/w/api.php?action=opensearch&limit=10&format=json&search=halle

wiktionary api need a custom User-Agent header

http://nssug.baidu.com/su?x=1&prod=recon_dict&wd=halle&p=3&t=1402911230200 百度词典的速度非常快，20～30毫秒，对输入法而言在可接受范围内

百度翻译api：
http://apistore.baidu.com/microservice/dictionary?query=test&from=en&to=zh

海词翻译api

1. jsonp
   http://fanyi.dict.cn/search.php?jsoncallback=jQuery19106342640765942633_1424354182311&q=test&_=1424354182324
2. json
   http://fanyi.dict.cn/search.php?q=test

call google suggestion jsonp api

$.jsonp({
    url: 'http://google.com/complete/search?output=firefox&hl=en&q=halle',
    callbackParameter: "callback",
    success: function(data) {
        console.log(data);
    },
    error: function() {
        console.log(arguments);
    }
});