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- In order to study the mechanism of action of tea saponin on Pieris raPae,antifeedingeffect of tea saponin on P. rapae 5-instar larva was examined,and contact poison and stomach poi-son actions of tea saponin on P. rapae 4-instar larva were also examined. 为探讨茶皂素对菜青虫的作用方式，测定了茶皂素对菜青虫Pierisrapae（Lin-naeus）5龄幼虫的拒食作用，以及对4龄幼虫的触杀和胃毒作用。
- Drawer Handle Smeared with Contact Poison 涂有接触毒素的抽屉把手
- He thinks pornography is poison to young minds. 他认为色情会腐蚀年轻人的心灵。
- The arrows had been tipped with poison. 这些箭的箭头上都蘸上了毒药。
- Someone tried to poison our dog. 有人想毒杀我们的狗。
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- The poison has passed into his system. 毒物已进入他的体内。
- Dip your injured finger in the disinfectant to soak out the poison. 把你受伤的手指浸在消毒剂里，把毒浸泡出来。
- That poor madam has lost all contact with reality. 那位可怜的夫人脱离了现实生活。
- He tried to kill himself by taking poison. 他曾试图服毒自杀。
- For further information, contact your local agent. 要进一步了解情况，请与本地代理商联系。
- He took an antidote for the poison. 他服了对付那种毒物的解毒剂。
- Have the children been in contact with disease? 孩子们同这种疾病有过接触吗？
- The rat poison comes in small pellets. 灭鼠药是做成丸状的。
- The doctor expressed poison from her wound. 医生把毒液从她的伤口挤了出来。
- Helping a caller to contact somebody by phone. 帮助打电话者同某人电话联系。
- Petrol fumes from car engines poison the atmosphere. 汽车引擎排放的汽油烟气毒化着大气。
- I came in contact with her by telephone. 我和她通过电话联络。
- A poor contact causes power to fail occasionally. 接触不良有时会造成断电。
- Do you have soft contact lens care product? 有没有软性隐型眼镜保养用品？
