查询词典 optional attribute

However, the alt attribute is optional and may be omitted from particular image elements.

然而，alt的属性是可选的，甚至是可以忽略的。

The category and number of arguments in the semantic structure of sentences in modem Chinese are represented as follows: 1 Subject, which is composed of agent, causer, sensor, possessor, carrier 2 Object, which is composed of patient, factitive, position, undertaker, causee, phenomenon, involvement, attribute 3 Alternative participant, which is composed of recipientlsource, collaborator 4 Complement The predicate and the argument constitute the basic predication structure, which becomes an extended predication structure in the presence of an adverbial argument, which is an optional semantic constituent in the semantic structure.

为此，本文把现代汉语动词按其跟相关语义成分的依存关系首先分为动作动词、致使动词、心理动词、性状动词、关系动词5大类，以确定各主事动元的类别；第二层级按动核所带动元的数量，对各类动词进行下位分类，分别得出一元动词、二元动词、三元动词，以显示动核所带动元的数量：第三层级按动核所带动元的性质和数量把现代汉语动词分为24个基本类，以确定动元即必有语义成分的基本类别和数量。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。