That means that they should include the abstract keyword, optionally a visibility modifier, the function keyword, and an optional list of arguments in parentheses.

这意味着，抽象方法应包括abstract关键字、可选的可见度修改符、function关键字，以及圆括号内可选的参数列表。

youdao

The comparison can be further controlled by specifying an optional list of attributes to be excluded from comparison and the style of comparison for String-valued attributes.

要进一步控制比较，可以指定不用于比较的可选属性，以及为值为String的属性指定比较方式。

youdao

The structure of the parameterized verb XML document is very simple. It contains the usual XML prologue, the namespace declaration, the mandatory verb name and the optional list of parameters

参数化谓词 XML 文档的结构非常简单。

youdao

Simply select the type of invitation, enter your guests' e-mail addresses, create an "items to bring" list (optional), then send.

FORBES: Party Planning

At the top of the list of nagging uncertainties among the rival teams is the optional introduction of kinetic energy recovery systems (Kers).

BBC: F1 teams face testing times

In addition to turning your browser into a speed demon, this optional setting also uses Safe Browsing, which checks the sites you're visiting against a list of potential threats for malware and phishing.

ENGADGET: Chrome beta for Android delivers a proxy-based speed boost, now syncs autofill and saved passwords