When Dmitri Mendeleev devised his periodic table in 1869, it contained 63 elements; a similar chart in a chemistry classroom now has up to 118 entries.

门捷列夫于1869年制定周期表时，表中包含63个元素，而现在化学课堂中一个类似的图表元素已多达118个。

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When we entered the classroom, Angela went to sit at a black-topped lab table exactly like the ones I was used to.

我们走进教室以后，安吉拉坐到一张黑色台面的实验桌后，这种实验桌和我原来用过的一样。

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There's a huge star spangled banner draped across the classroom table and the deputy headmaster has laid out a number of Barack Obama biographies.

< span="" o<=""> 有披着教室桌子对面的大明星美国的旗帜和副校长已经制定了一大批奥巴马传记。

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They have enjoyed the experience, they have come into a classroom and had lots of opportunities to learn through playing at different stations instead of sitting at a table.

BBC: Extra ?5m for play learning plan