Without any visible decision making at a higher level, it chooses a new nest site, signals workers to begin building, and governs itself.

在没有上级作出任何可见决策的情况下，蚁群选定一个新的地点，发出信号让工蚁开始建巢，然后就开始进行自我管理。

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The effect, for viewers a few metres away, is a lifelike, full-sized 3-D moving image of a person that appears to float in space, without any visible screen.

如果观众站在几米以外的话，就可以看到一个真实大小的3D幻象漂浮在空中，而看不见屏幕。

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Gradually the river grows wider, the Banks recede, the water flow more quietly, and in the end, without any visible break, they merged in the sea, and painlessly lose their individual being.

然后河面渐渐地变宽，两岸后撤，水流变得平缓，最后连绵不断地汇入大海，毫无痛苦地失去自我的存在。

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Instead, as Mr Freddoso rather depressingly finds, Mr Obama spent the whole period without any visible sign of rocking the Democratic boat.

ECONOMIST: Barack Obama

The reality is that Dallas-based Southwest Airlines has maintained an 11% capacity growth rate--measured by available seat miles--over the past five years without any visible effect on profitability.

FORBES: The Ghost of Crandall

The reality is that Dallas, Texas-based Southwest Airlines has maintained an 11% capacity growth rate--measured by available seat miles--over the past five years without any visible effect on profitability.

FORBES: The ghost of Crandall