To improve absorption, Stone suggests pairing supplements with a food in which they are soluble and steering clear of caffeinated beverages.

为了促进吸收，斯通建议将补品与可溶性食物搭配，还要避免饮用含咖啡因的饮料。

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The BMW Z4 has chiseled-stone wheels, doors and trunk. The seats, steering wheel and dash interior are made of formed cement, and even the BMW logo has been etched into the chassis and wheels.

它的车轮、车身、车门都是石头凿刻而成，车座、方向盘和仪表盘是由水泥做的，底盘和车轮上还刻着宝马的车标。

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Steering between stone weirs and hidden eddies, the boatman points out wildlife along the riverbanks: shelducks in the shallows, water buffalo in the grass, a grey heron hidden among the reeds.

BBC: The perfect trip: China