having little or no weight or apparent gravitational pull; light;
\\\"floating freely in a weightless condition\\\"
\\\"a baby bat...fluffy and weightless as a moth\\\"
\\\"jackets made of a weightless polyester fabric\\\"
造句
用作形容詞(adj.)
Knowledge is weightless, a treasure you can always carry easily. 知識是一種無重的、可以輕易攜帶的珍寶。
Man is weightless in space. 人在太空失重。
We feel weightless when the elevator descends. 當電梯下降時，我們會感到失重。