AnalyzerSentence analysis3SpansSentence滑らかにする1000 character limitAnalyzeSentence滑なめらかにするSpan Details滑なめらかsmooth; glassy; velvety; soft; fluent; fluid; trouble-free; continuously differentiablena-adjectiveにadverbial form after a na-adjectivegrammarするlight/support verb with a noun or noun-like phrasegrammar