"The Mars helicopters' maiden flight was successful."
"NASA's Mars helicopter had a successful maiden flight."
- "The Mars helicopters' maiden flight was successful."
"Mars helicopter" 「火星ヘリコプター」
"maiden flight" 「初飛行」
"maiden~" 「初〜」
"successful" 「成功」
"NASA's Mars helicopter had a successful maiden flight."
"NASA's ~" 「なさの〜」
”had a successful maiden flight" 「初飛行に成功」
・The Mars helicopter successfully completed its first flight.
・The Mars helicopter successfully completed its first flight.
「火星ヘリコプターは初飛行を成功させました」
successfully は「成功して」という意味で、ニュースや説明でとてもよく使われます。
completed its first flight は「初飛行をやり遂げた」という、ややフォーマルでニュース向きの言い方です。
・The Mars helicopter made its first successful flight.
「火星ヘリコプターは初の成功飛行を行いました」