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.
Well, have you considered using the lab in your free class? I suggest you ask Mr. Wu.
噢,你是否考虑过在自习课上利用这个实验室?我建议你问问吴先生。
On our way home that night I looked down and saw that the necklace was not around my neck any more. I told Pierre. We rushed back to the palace and looked for it.We asked everyone there if they had found a necklace, but without luck. We couldn't find it;