今年的时间。 看是否有空了。 突然觉得可以学这个技能。14 – 15 August 2021, 28 – 29 August 2021 4 – 5 September 2021, 18 – 19 September 2021 2 – 3 October 2021, 16 – 17 October 2021, 30 – 31 October 2021 13 – 14 November 2021, 27 – 28 November 2021 4 – 5 December 2021, 18 – 19 December 2021