Message in Chinese (Simplified) (中文(简体))
<var>X</var> 不是有效的类型,该类型必须是 <var>Y</var> 的派生类。
Unlocalized message
<var>X</var> is not a valid type, which must be a derive class of <var>Y</var>.
Search by Google<var>X</var> 不是有效的类型,该类型必须是 <var>Y</var> 的派生类。
<var>X</var> is not a valid type, which must be a derive class of <var>Y</var>.
Search by Google