Answer the questions at the end based on the text.

The BeiDou Navigation Satellite System (BDS, simplified Chinese: ; traditional Chinese: ; pinyin: Beidou weixing daohang xitong) is a Chinese satellite navigation system. It consists of two separate satellite constellations a limited test system that has been operating since 2000, and a full-scale global navigation system that is currently under construction.

The first BeiDou system, officially called the BeiDou Satellite Navigation Experimental System (simplified Chinese: ; traditional Chinese: ; pinyin: Beidou weixing daohang shiyan xitong) and also known as BeiDou-1, consists of three satellites and offers limited coverage and applications. It has been offering navigation services, mainly for customers in China and neighboring regions, since 2000.

The second generation of the system, officially called the BeiDou Navigation Satellite System (BDS) and also known as COMPASS or BeiDou-2, will be a global satellite navigation system consisting of 35 satellites, and is under construction as of January 2015[update]. It became operational in China in December 2011, with 10 satellites in use, and began offering services to customers in the Asia-Pacific region in December 2012. It is planned to begin serving global customers upon its completion in 2020.

1. When will it begin to serve globally?
2. What is the BDS?
3. What is BDS an acronym for?
4. What's the name in traditional Chinese?
5. What is the English translation of the Chinese characters?
6. How many constellations are there?
7. When did the limited constellation start working?
8. Is the full system working?
9. Why not?
10. Which one was first operational?
11. How many satellites?
12. Did it have full coverage?
13. Who were it's main clients?
14. What was the second one called?
15. Will it have a lot of satellites?
16. When did they start building?
17. How many satellites were up in 2011?
18. Who did those serve?
19. Where else?
20. Are there plans for global service?

Numbered answers:
1. upon its completion in 2020
2. a Chinese satellite navigation system.
3. BeiDou Navigation Satellite System
4.
5. The English transliteration is Beidou weixing daohang xitong
6. Two.
7. 2000
8. No.
9. It is under construction.
10. The BeiDou Satellite Navigation Experimental System
11. Three
12. No.
13. customers in China and neighboring regions
14. The BeiDou Navigation Satellite System (BDS), also known as COMPASS or BeiDou-2
15. If 35 is a lot, then yes.
16. January 2015
17. 10
18. China
19. Customers in the Asia-Pacific region, but not in 2011
20. Yes.