The Aero L-29 "Dolphin" is a Czechoslovak training aircraft that made its first flight in April 5, 1959.
1959年4月5日，捷克斯洛伐克教练机l - 29海豚首飞。
This effort has included attempts to modify for unmanned flight the MiG-21 (ph) and with greater success an aircraft called the L-29 (ph).
这些无人飞行器中包括改进的无人飞行器米格-21和称之为L-29的飞机。
Your L/C No. 48 is short of$29.
你方第48号信用证少开了29美圆。
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