It was customary in Newton's time for the great mathematicians of Europe to spend months on solving a problem and then offer it as a challenge to all others.(英译中)
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每个队员都对这次胜利作了贡献。(contribute)(中译英)
The most familiar outward signs of aging may be seen in old people, such as the greying of the hair and the wrinkling of the skin.(英译中)
这出戏将首先在北京上演,然后到全国各地巡回演出。(tour)(中译英)
Lately the main focus of monetary policy has shifted to interest rates.(英译中)