meter">echoStr</span></dt><dd>类型：<a href="https://docs.microsoft.com/dotnet/api/system.string" target="_blank">System<span id="LST71E49A89_7"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST71E49A89_7?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>String</a><br /></dd></dl><h4 class="subHeading">返回值</h4>类型：<a href="https://docs.microsoft.com/dotnet/api/system.string" target="_blank">String</a></div><div class="collapsibleAreaRegion" id="seeAlsoSection"><span class="collapsibleR