Methane gas does collect in the mines around here.周围的矿井里的确有沼气聚积。The ignition of methane gas killed eight men.甲烷起火，致使8人丧生。Methane and propane are alkanes.甲烷和丙烷是烷烃。...
The letter had many blots and blurs.信上有许多墨水渍和污迹.It's all, all covered with blots the same as if she were crying on the paper.到处, 到处都是泪痕,像是她趴在信纸上哭过.A very smooth theme for Wordpress. Great for tech blots !字体非常的小,可惜了这...