当细胞或病毒被冷却时, 它们的薄膜往往会突然变化魔角自旋核磁共振的新技术监测其薄膜层的性能变化.
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The train come to a sudden stop, and all glasses and plates dropped to the floor.
2火车突然刹车, 杯子和盘子都滚落在地上.
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The train came to an abrupt stop, making many passengers fall off their seats.
火车突然刹车, 使许多乘客从座位上跌下来.
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