The sample, after being purged by reversed extraction and purified byPVP - kieselguhr column, was enriched through Amberlite XAD - 7 column.样品经过乙酸乙酯反萃取及PVP - 硅藻土层析柱后, 再径XAD - 7柱浓缩....
Build her up with kindness and a sympathetic ear.用友善和富有同情心的倾听来重拾她的信心。Most were sympathetic once we pricked their consciences.一旦我们使他们良心发现，大多数人还是有同情心的。Tourists are, in the main, sympathetic people.大体说来，游客们都富有同情心。...
St Peters-burg's night life ranks as more exciting than the capital's.圣彼得堡的夜生活比首都的更刺激。Is there a Burg King around here?这附近有汉堡王 吗 ?D . S . Burg planet - pure German brand, the piano crown.Burg 帝斯伯格 —— 纯真的德国品牌, 钢...