His father is a merchant prince.他的父亲是一位商业巨擘。A merchant’s happiness hangs upon luck.商人的幸福靠运气。The merchant wants to expand his business.那个商人想扩大他的经营。The ride was smooth until they got into the merchant ship's wake.航行一直...
三角形的三个高共点.The 3 altitudes of a triangle are concurrent.建构一动态绘图:展示星状线共点的三切线.Construct an animation of three concurrent tangents of the astroid.圆上五点,其任四条辛姆森线会共点,可依次找出五点,这五点会共圆.Discover a theorem about the Simson line and f...
Saunas can be hazardous if misused. Avoid a big meal beforehand.洗桑拿浴如果方法不当会有危险，浴前切忌饱食。I asked myself: How does this sauna differ from all other saunas?我扪心自问: “这个桑拿和其它的有何不同? ”They may also have swimming pools, saunas, exe...