您要查找的是不是：
- The emery is a hard metallic substance. 金刚砂是非常坚硬的金属物质。
- Barium sulfate is a radiopaque substance. 钡硫酸盐是一种辐射光不能穿透的物质。
- This non sequitur invalidates his argument. 他不根据前提推理因而论证无效。
- The cabin has a flat stone for a threshold. 这间小屋用一条扁平的石头做门槛。
- The treaty will be the threshold of lasting peace. 这个条约将成为持久和平的开端。
- Musk is a kind of strong-smelling substance. 麝香是一种有强烈气味的物质。
- Graphite is a soft black substance. 石墨是一种软而黑的物质。
- He was on the threshold of his career. 他的事业刚刚起步。
- This substance is soluble in alcohol. 这种物质能够溶解在酒精中。
- Patience is a sine qua non for a good teacher. 做个优秀教师必不可少的条件是要有耐心。
- Her account was in substance correct. 她的账目基本上是对的。
- The diplomat was declared persona non grata. 这位外交家被宣布为不受欢迎的使节。
- Ammonia is a chemical substance. 氨是种化学物质。
- He had never crossed the threshold of a bar before. 他过去从未进过酒吧的门。
- The substance is irritable to sensitive skin. 这种物质对敏感的皮肤有刺激性。
- An inert substance used to dilute. 稀释剂一种惰性物质
- He is declared personal non grata and forced to leave the country. 他被宣布为不受欢迎的人而被迫离开该国。
- Scientists are now on the threshold of an important discovery. 科学家们很快就会有一项重大发现。
- The question was never discussed in substance. 这问题实际上从来没有讨论过。
- Gelatin is a clear tasteless substance. 明胶是一种透明无味的物质。
