特朗普回应南海坠机

Group 1 - The article reports on two incidents involving U.S. military aircraft crashing in the South China Sea, with President Trump suggesting that fuel quality may be a factor in the crashes [1][2] - The U.S. Navy's Pacific Fleet confirmed that an MH-60R Seahawk helicopter and an F/A-18F Super Hornet both crashed shortly after taking off from the USS Nimitz, with all crew members rescued [1] - The Chinese Foreign Ministry expressed willingness to provide humanitarian assistance if requested by the U.S., while emphasizing that U.S. military activities in the South China Sea contribute to regional instability [2]