Nikasol
醋酸乙烯酯
🗣️ 情景例句
I started traveling twenty-four hours ago.
从出门到现在已经二十四小时了。
It's been cloudy all morning.
整个早上多云。
Officials from Greenwich Observatory have the clock checked twice a day.
格林尼治天文台的官员们每天两次派人矫正此钟。