您要查找的是不是：
- Analysis on the sub-chronic toxicity threshold of herbicide tezbmthylazime 除草剂特丁津亚慢性毒性阈值分析
- 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 factory had been sending out toxic fumes. 这家工厂一直在排放有毒的废气。
- The treaty will be the threshold of lasting peace. 这个条约将成为持久和平的开端。
- He was on the threshold of his career. 他的事业刚刚起步。
- He had never crossed the threshold of a bar before. 他过去从未进过酒吧的门。
- Beware how you handle the toxic chemical. 小心处理有毒的化学药品。
- 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。
- A toxic chemical or other substance. 有毒的化学品或其它物质
- The degree to which a substance is toxic. 毒效一种物质毒性所达到的程度
- Toxicity threshold value 毒性临界值
- toxicity threshold 毒力阈
- The tax threshold for a single pensioner is 450 dollars. 单身养老金领取者的征税起点是450美元。
- The court is not legally justified in stopping at the threshold of the case. 一开始就使案件停止不前，法院这样做是完全不合法的。
- They are at the threshold of a new career. 他们正要开始干一番新的事业。
- A substance having a specific toxic effect on certain cells. 细胞毒素对某些细胞有特殊毒害作用的物质
- toxic threshold dose 中毒阈剂量
- There must be a threshold of thermal noise. 必有一个热噪声的门限值。
- Derived from or containing toxic matter. 从有毒物质中获得的或含有有毒物质的
- He is on the threshold of success. 他即将成功。
