The Doberman let out a string of roaring barks.短毛猎犬一阵狂吠。Then he sits and barks until someone lets him out.然后它坐着吠叫,直到有人把它放出去为止.The dog gave several fierce barks.狗汪汪地吠了几声....
Its main components include propane, butane and butylene.主要成份是丙烷 、 丁烷、丁烯等.Catalytic oligomerization of remain butylene is a way for enterprises to rebottle andpotentialities for more benefits.剩余丁烯催化齐聚是企业消除瓶颈、挖潜增效的途径.By m...