WordPress Automatic can import from almost any website to WordPress. It can translate the content before posting to any lanaguage of your choice using multiple services including Yandex Translate. Here are the steps to get your key

1- Visit this link and login to your Yandex account. If you don’t have an account, sign up

https://translate.yandex.com/developers/keys

2- Click “Create new API key”

3- Click on the “Create” button

4- Copy the key value to the plugin settings page