pre-landings是什么意思 pre-landings在线中文翻译

pre-landings是什么意思，pre-landings在线翻译，pre-landings中文意思，pre-landings的中文翻译，pre-landings发音，pre-landings例句，pre-landings词组短语，pre-landings怎么翻译，单词pre-landings的意思