He gave his girlfriend a sapphire engagement ring.他送给女友一枚镶着蓝宝石的订婚戒指。Now let us consider crystals such as diamond or sapphire.现在让我们考虑象钻石和蓝宝石这样的晶体.He left a sapphire ring to her.他留给她一枚蓝宝石戒指....
A NEW SPECIES OF LEPTOCONOPS FROM CHINAL . ( HOLOCONOPS ) YUNHSIENENSIS ( DIPTERA, CERATOPOGONIDAE )我国细蠓属的一新种——郧县细蠓Leptoconops ( Holoconops ) yunhsienensissp .nov. ( 双翅目:蠓科 )DESCRIPTION OF LEPTOCONOPS ( HOLOCONOPS ) SHAn...
Please bind fast; it is loosing.绑紧点, 它要松了.He never criticized his boss because he was afraid of loosing his job.他从不批评他的老板,因为他怕丢掉工作.Cause: machinery of doubling: as a printing plate or blanket loosing.原因: 机械重影: 由于印版或橡皮布松动...