Hillary Clinton spent six hours answering questions about the late sex offender Jeffrey Epstein on Thursday after being compelled to testify, and Jimmy Kimmel has thoughts.
"Birds can actually morph their wings," says Upmanyu. "They have perfected this highly efficient way to fly." Aircraft and wind turbines might one day do something similar. Upmanyu suggests that the wing could automatically and dynamically respond to air pressure, using a valve-based system to adjust its shape.
。搜狗输入法对此有专业解读
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Part 2: Turning it on