The drop function determines to which feed Url to publish the document and then calls the uploadUrl function.

drop函数确定要将该文档发布到哪个提要Url，然后调用uploadurl函数。

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Figure 11 shows another complicated action, the drag-and-drop function, which is a common feature in Web 2.0 applications. This function allows users to drag widgets on the UI dynamically.

图11显示了另一项复杂的操作，即拖放功能，这是Web 2.0应用程序中的常见特性，允许用户在UI上动态拖拽小部件。

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Overdosing on water causes sodium levels to drop, which disturbs brain function, and puts babies at risk of water intoxication which endangers life.

婴儿摄入过多水分会导致钠流失，影响脑部活动，还可能水中毒，危及生命。

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In tests on seven people with nocturnal asthma, 13 non-nocturnal asthmatics and 11 non-asthmatics, lung function tests revealed that patients with nocturnal asthma had the highest levels of melatonin and the greatest drop in lung function overnight.

BBC: NEWS | Health | Sleep supplement asthma warning

They are also unsure whether the early drop in brain function could lead to conditions such as dementia.

BBC: Smoking 'rots' brain, says King's College study

Researchers from the National Jewish Medical and Research Center in Denver, US, found that the hormone caused a drop in lung function in asthmatics.

BBC: NEWS | Health | Sleep supplement asthma warning