何时

The main characteristics and contributions of the dissertation can be summarized as follows: Currently, all the background modeling algorithms classify foreground from background based on pixels but not the structure information of an object, which leads to fragmentized foreground or introduces too much redundant foreground.

在实际的应用中，如何定义目标物以及何时对目标物进行跟踪是两个重要的问题，本文通过形态学和连通性分析等操作把获取的前景区域分类成若个Blob，每个Blob对应一个目标物；本文还为每个Blob维护了一个跟踪列表来确保传递给系统跟踪模块的Blob是稳定的，可信的目标物。

Every joy that you've ever glimpsed is yours to live and to express any time you choose.

你曾瞥见过的每一种欢乐都是由你决定在何时去兑现和表达的。

Every joy that you've ever glimpsed is your to live and to express any time you choose.

你曾瞥见过的每一种欢乐，都是由你决定在何时去兑现或表达的。

Every joy that you've ever glimpsed is your to live and to express any time you choose.

你曾瞥见过的每一种欢乐都是由你决定在何时去兑现和表达的。

It is not known when Iverson will rejoin the Grizzlies.

目前还不知道何时艾弗森将重新加入灰熊队。

It is not clear how soon green sources of power will become competitive with their grubbier rivals and whether governments will keep paying the subsidies on which they depend in the meantime.

绿色能源何时能与那些脏兮兮对手角逐，政府能否继续支付赖以生存的补贴都尚不明确。

VW's shares have gyrated wildly since the deal was announced on August 13th, as investors tried to work out who would buy what, when and at what price.

大众的股价在8月13号宣布这一交易以后大幅震荡，因为投资者们想知道哪一方将购买哪一部分以及何时以何种价格完成交易。

When did he stop hiccupping?

他何时停止打嗝的？

When did he stop hiccupping?

他何时停止打嗝旳？

You're best bet is to keep electronic goodies and their suction cup holsters out of sight every time you park your car no matter when or where – that will help prevent any damage your actual car in the long run.

你是最好的办法是保持电子好吃的东西和他们的吸盘枪套的视线之外每次公园你的车，无论何时何地-这将有助于防止任何损害长远来看您的实际车。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。