This is often the poet's stock-in-trade, but he seems to single them out in order to send up the very idea of the simile in poetry, as in “Violets blossomed loudly/ like a swear word in an empty tank”.

主体句式：This is … but he …

结构分析：这是一个并列句，后面分句成分较为复杂，带有一个不定式短语作目的状语，as 引导成分修饰的是整个分句。

参考句子译文：虽然这通常是诗人的惯用手法，但他却似乎把这些单独挑出来，以传达诗歌中明喻这个概念。比如“紫罗兰纵情开放/ 宛如空罐里的一句毒誓”。