The effect of previously acquired languages on third language acquisition 論文 Xiaoyu Luan・Masakazu Kuno・Ayaka Sugawara・Yayoi Kawasaki・Eriko Sugimori ·2024-02-01 ·『Heliyon』 10(4) pp. e26202-e26202 doi:10.1016/j.heliyon.2024.e26202