Underground
adj.地下的；秘密的；先锋派的；隐蔽的

The plane hit so hard that one engine was buried 16 feet underground.
飞机猛烈撞击地面，致使一个引擎陷到了地下16英尺处。
The underground is ideal for getting to work in Milan.
在米兰，乘地铁去上班非常便捷。
These US dollars were smuggled into the country during the war, to aid the underground.
战争期间，这些美元被偷运到该国，用以资助那里的地下组织。

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Experience (pp. & pt. experienced)
n.经验，体验；经历，阅历
vt.亲身参与，亲身经历；感受；发现

He's counting on his mother to take care of the twins for him; she's had plenty of experience with them.
他靠母亲帮忙照顾他的双胞胎；她在这方面很有经验。
I should not be in any danger here, but experience has taught me caution...
我在这里应该不会有任何危险，但是经验告诉我要小心。
His only experience of gardening so far proved immensely satisfying...
到目前为止他唯一的一次园艺经历非常令人满意。
We had never experienced this kind of holiday before and had no idea what to expect...
我们以前从未有过这样的假期，不知道会怎么样。
Widows seem to experience more distress than do widowers.
寡妇似乎比鳏夫更痛苦。

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Calculate (pp. & pt. calculated)
vt.& vi.计算；估计；打算，计划；旨在
vt.预测，推测

We calculate that the average size farm in Lancaster County is 65 acres...
我们计算出兰开斯特郡的农场面积平均为65英亩。
I believe I am capable of calculating the political consequences accurately...
我觉得我能准确预料此事的政治后果。
From this you can calculate the total mass in the Galaxy...
由此你可以算出银河系的总质量。

剧情百科

Sherlock一边热情讲诉'露水情人'，一边关注观众的表情。很明显，这有要高思维考虑的话题，场下所有人包括台上两位主角也并不敢兴趣。好在Sherlock意识到这点并把话题再次转回到John身上才停止。不过，到了视频后方，摄影师在拍摄时，Sherlock手中的杯子却突然滑落。Sherlock突然想到什么呢?

考考你 Q&A
Q: Please use the word or phrase you just learnt to complete the sentence beblow.

1.A presidential election was _____ for last December...
总统选举原计划在去年 12 月举行。
2.The resulting salty water will be _____ at sea...
所产生的盐水将被排入大海。

A:本期答案见下期
上期答案：

1.An apple tree producing square fruit is baffling experts.
一棵结方形苹果的树令专家大惑不解。
2.Gautier's solution to the puzzle is ingenious.
戈蒂埃破解这道难题的方法很巧妙。