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The NCIS team searches for a suspect and their motive following the bombing of a large facility where military combat drones are assembled. Callen and Kilbride get troubling news about a body found in Syria.。在《贝乐虎识字》中，贝乐虎化身成为老师，为小朋友们讲解常用汉字。从汉字的演变、读音、组词、造句，以及常用成语和诗句的角度，全方位解析汉字。。