Follow the instructions on the project (they are quite clear. Instructions: 1. Click the green flag 2. Follow the rest of the instructions in the project >:) 3. You cant do multiple languages at once, so just press the green flag (again!!) to choose a different language.
Note that you may need to wait a few seconds before the translation as I don't know how fast/slow you type! For Chinese, you may need to put Simplified or Traditional in brackets after or the programme will not recognise it. Thanks for trying this out!! :)