38 Topaz Topaz is a hard, transparent mineral. It is a compound of aluminum, silica, and fluorine. Gem topaz is valuable. Jewelers call this variety of the stone precious topaz. The best-known precious topaz gems range in color from rich yellow to l

发表于:2018-12-08 / 阅读(320) / 评论(0) 分类 新概念优美背诵短文50篇

Topaz is a hard, transparent mineral. It is a compound of aluminum, silica, and fluorine. Gem topaz is valuable. Jewelers call this variety of the stone

发表于:2018-12-15 / 阅读(157) / 评论(0) 分类 新东方背诵文选

Topaz is a hard, transparent mineral. It is a compound of aluminum, silica, and fluorine. Gem topaz is valuable. Jewelers call this variety of the stone precious topaz. The best-known precious topaz gems range in color from rich yellow to light brown

发表于:2018-12-30 / 阅读(77) / 评论(0) 分类 考研背诵50篇

What? No, don't put me on hold. on hold:等着通电话 什么? 别啊,别让我再等了。 -Howard:Do you believe him? 能相信吗? Normally around women, he has the personality of a boiled potato. Normally:通常 personality:个性 bo

发表于:2019-01-28 / 阅读(76) / 评论(0) 分类 生活大爆炸第二季

Aquamarine 海蓝宝,兰玉 Garden Crystal 绿幽灵 Azurite 兰铜矿 Aventurine 砂金水晶 Amethyst 紫水晶 Ametrine 紫黄晶 Amber 琥珀 Emerald 翠玉 Onyx 黑玛瑙 Opal 蛋白石 Obsidian 黑耀石 Carnelian 红玉髓 Calcite 方解石

发表于:2019-02-13 / 阅读(58) / 评论(0) 分类 实用英语

Topaz Topaz is a hard, transparent mineral. It is a compound of aluminum, silica, and fluorine. Gem topaz is valuable. Jewelers call this variety of the stone precious topaz. The best-known precious topaz gems range in color from rich yellow to light

发表于:2019-02-25 / 阅读(58) / 评论(0) 分类 双语有声阅读