You can provide a sound to indicate the curtain going up and down to provide a marker you can hear.

您可以提供一种声音来表示幕布拉起和拉下，以提供一种可以听到的标志。

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Oxford students will lay down a marker that they will not tolerate the withdrawal of public funding for the arts and the humanities, and they will not tolerate an open market in university fees.

牛津大学城的学生将设置一块标志牌，以示他们不会容忍撤销对人文学科的公共资金支持，他们不会容忍大学以自由市场的方式收费。

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If you look at the editor for some source code that is being advised, you will see marker ICONS down the left-hand side of the editor.

如果查看编辑器中建议的源代码，就会看到编辑器左手边的标记图标。

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During the game, that virtual first-down marker you see on your TV could now be on the field itself before the ball is snapped.

FORBES: Field of Screens

He wanted the Europeans to take a lead and so put down a marker for the future.

BBC: Will Sarkozy get a statue in Tripoli?

He has put down a marker - that he will challenge German leadership of the debt crisis.

BBC: Europe: Things fall apart