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They came back from vacation a day earlier _______ _______. (比预期的)
1年前
在△ABC中,角A,B,C所对应的边分别为a,b,c,若实数λ,μ满足a+b=λc,ab=μc^2,则称数对(λ,μ)为△ABC的“Hold对”,现给出下列四个命题:
1年前
Researchers have found that there are some basic things that you can do to become happier.
1年前
1年前
风扇的外包装是瓦楞纸箱,瓦楞纸是通过改变纸的________增加抗弯曲能力的。
1年前