2021年中国植树节的主题是什么？
What is the theme of Chinese Arbor Day2021?
#植树节#【14亿人同植一棵树 加油！】这棵大树，与你我息息相关转！一起努力，未来可期！ ​​​
Arbor Day comes on March 12th every year. In China, this special day began in 1979. On that day, people can plant many trees. And if we plant trees more, we must also take care of the trees by watering them until they grow upto be strong.

#中国疫苗##全球抗疫# ［路透社］巴西研究证实“中国疫苗对巴西新冠病毒变种，及英国和南非新冠病毒变种均有效”。

BRASILIA/SAO PAULO, March 10 (Reuters) - Preliminary data from a study in Brazil indicates that the COVID-19 vaccine developed by China's Sinovac Biotech Ltd is effective against the P1 variant of the virus first discovered in Brazil, Sao Paulo's state governor Joao Doria said on Wednesday.

Doria's comments at a news conference in Sao Paulo confirm a Reuters report from earlier this week, which said the study had tested the blood of vaccinated people against the Brazilian variant of the virus. Coronavac, as the Sinovac shot is known, is the main vaccine currently being used to inoculate people in Brazil.

Dimas Covas, head of research institute Butantan, which is manufacturing the Sinovac vaccine, said other tests in China have indicated effectiveness against the UK and South Africa variants.

#晚安#[月亮]当地时间2021年3月9日，日本岩手县，“奇迹松树”孤独伫立。日本东北岸岩手县一片七万棵树木的森林，在2011年被大地震所引发的海啸摧毁，只有一棵树仅存。这颗奇迹般存活的松树，成为灾后复兴的象征。这颗松树枯萎死亡后又被人工复原，成为了日本“3·11”大地震的纪念碑。Photos showed the monument to the "Miracle Pine," a lone tree that survived the vicious March 2011 tsunami in Rikuzentakata, northeastern Japan, on Tuesday, two days ahead of the 10th anniversary of the Great East Japan Earthquake. The tree, which stood resolute along the town's coastline in the face of the surging waves, died 18 months later of exposure to saltwater and was removed to be preserved and reinstalled as an indelible memorial to the disaster victims as well as a symbol of hope for the region.