研究了偕二金属有机试剂3与氯化三烷基锡和碘的非对映选择性反应.The diastereoselective reactions of organogembismetallic reagent 3 with trialkyl tin chloride and iodine were studied....
Families of six or seven are the norm in Borough Park.在区公园住宅区六口或七口之家十分普遍。a departure from the norm一反常态Of his age, the child is above the norm in arithmetic.在他那个年龄, 这个孩子的算术能力是超过标准的....
The Sky News TV station is largely run by ex-BBC news staffers.空中新闻电视台主要是由原英国广播公司的新闻工作人员运作的。These are the folks from the local TV station.这些是当地电视台来的人。They live in the neighbourhood of the TV station.他们住在电视台附近....
A flock of sea gulls are hovering over the deck.一群海鸥在甲板上空飞翔.The warden took us to a vantage point on the slopes where we saw herring gulls on the rocks below.管理员把我们带到斜坡上的一处有利位置，我们从那里看到了下面岩石上的银鸥。The gulls which haunted th...