It's erratic and experimental because there was no grand plan.

它的不稳定和实验性来源于缺乏宏观的计划。

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According to a description on Google Labs, the search engine's experimental playground: "City Tours helps you identify points of interest and plan multi-day trips to most major cities."

Google实验室(Google Labs)这样描述这个工具：“City Tours帮助你确定游览大多数主要城市的兴趣点，同时计划多日行程。”

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In this paper an experimental plan of transpiration control system is also provided, including the hardware and software of the interface with the computer, and the coolant supply system.

本文还提供了发汗控制系统的实验方案，包括系统的计算机接口、硬件和软件以及发汗供给系统的实施方案。

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An experimental batting order threw up captain Andrew Strauss and Bopara as its openers, and that plan backfired as Strauss departed in the seventh over, flapping at a ball he could barely reach outside the off-stump and hitting it to point.

BBC: England win after farcical finish