threshold
n
1 piece of wood or stone forming the bottom of a doorway 门槛.
2 entrance of a house, etc (房屋等的)门口
cross the threshold, ie enter 跨过门槛(进入).
3 (usu sing 通常作单数) (fig 比喻) point of entering or beginning sth 入门; 起点; 开端
He was on the threshold of his career. 他的事业刚刚起步.
at the threshold of a new era in medicine 医学领域新时代的开端.
4 (medical or psychology 医或心) limit below which a person does not react to a stimulus 阈
above/below the threshold of consciousness 阈上[下]知觉
have a high/low pain threshold, ie be able to endure much/little pain, eg during illness 有很高[低]的痛觉阈.
When you have finished your experiment, please tidy the lab and put everything back in the cupboards.
做完实验后,请你们把实验室整理好,并把所有的东西放回器皿柜。
You were very kind. You brought out all your jewellery and you told me I could take anything I wanted. There were so many beautiful things that it was hard to choose. And then I saw a lovely diamond necklace with a big blue stone in the centre.