这些信息不仅能为可选的，而且甚至还能与其特定用法相关，例如在检索操作中就只需要成员标识符。
Such information may not only be optional, but may not even be relevant for a particular use of it, such as in the retrieve operation where only the member identifier would be required.
LSD是1971年《药物滥用法》中a类第一栏药物。这意味着人们认为它不仅高度危险而且还没有医疗研究价值。
Under the 1971 Misuse of Drugs Act it is classified as a class a, schedule 1 substance - which means not only is LSD considered highly dangerous, but it is deemed to have no medical research value.
段中第四句是第二点：尊敬老人长期以来就是民族传统--画中的女孩不仅自私无礼而且不文明、令人憎恶。 句中有平行形容词的用法，程度也是渐进的。
Whats more, respecting the old has long been a national tradition-such a person as the girl depicted in the above picture is not only selfish and impolite but also uncivilized and detestable.
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