At opening time I take up my first position, greeting customers near the main entrance.
商店开门营业的时候，我开始了我的第一个工作岗位在商店的大门口迎接顾客。
For many iGoogle users, opening the main page is similar to opening a morning newspaper.
对很多iGoogle用户来说，打开主页就好比是打开一份早报。
Further opening the throttle valve activated the main fuel jet.
当节流阀进一步打开时，主喷口开始工作。
Ball valve for opening and closing the main pipe and equipment used media.
球阀主要供开启和关闭管道和设备介质之用。
Ball valve for opening and closing the main pipe and equipment used media.
球阀主要供开启和关闭管道和设备介质之用。
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