2021年10月12日，一架参加海军第39批护航编队针对性训练的舰载直升机进行起降训练。赵阳 摄
A ship-borne helicopter attached to the 39th Chinese naval escort taskforce conducts take-off and landing training during a specialized training exercise on October 12, 2021. (eng.chinamil.com.cn/Photo by Zhao Yang)
