It's a matter of physics and knowing the reentering object.

这个则属于物理学和对重返地球物体的了解方面的问题了。

A: It's a matter of physics and knowing the reentering object.

答：这个则属于物理学和对重返地球物体的了解方面的问题了。

But what's to keep the buoyant gas from working its way up through fractured rock and reentering the atmosphere?

要避免这种活性气体从断裂的岩石逃逸重返大气层又该怎么办呢？

Do list all related experience paid or unpaid if you are a recent graduate or are reentering the work force. Include experience from community service and volunteer work.

一定要列出所有相关经历，不论是否受薪，无论是刚毕业还是重新就业；一定要包含社区服务和义务劳动的经历。

Usually, attitude angles varied within a large range in all of a process of a satellite reentering, especially ballistic reentering, so it is difficult to avoid the singular point.

在卫星的返回再入过程中，角度变化范围很大，有时很难避开奇点。

If an exact match can't be determined for a recipient, a window displays with options for resolving the problem, such as selecting from some similar names or reentering a value as shown in figure 9.

如果无法为某个收件人确定精确的匹配，那么将显示一个窗口，其中显示解决此问题的选项，比如选择类似的名称或重新输入值，如图9所示。