They are usually expressed as declarative statements in the form of "the system shall do..."
它们通常被表示为“系统应做…”形式的陈述语句。
True to its functional programming heritage, you can do most everything you want to do in R using plain declarative statements.
按其函数式程序设计传统,使用普通声明语句,您就可以在 R 中完成几乎所有的事情。
The declaration clause contains declarative statements that declare local and global variables to be used in subsequent clauses.
声明部分包含声明语句,它们声明后续子句中使用的局部和全局变量。
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