The officer dismounted, tethering his horse to a tree.军官下了马，把它拴到一棵树上。We're often told that the world is tethering on the brink of destruction.我们经常被告知世界处于毁灭的边缘....

tethering的音标：...

v.用绳子拴住（牲畜）( tether的现在分词 )...

醚浸出菌素...

etherin的音标：etherin的英式发音音标为：['i:θərɪn]etherin的美式发音音标为：['iθərɪn]...