A species of cockroach sprays a substance, ethylacrolein, that is a kind of tear gas.
某种蟑螂喷射一种催泪性毒气――乙基丙烯醛。
lachrymatory effect
催泪作用，催泪效果
Smoke Section [Police Tactical Unit]
催泪烟排〔警察机动部队〕
It is indeed a pathetic song full of the sadness of parting.
离情绵绵，催人泪下。
Marriage with a Death and with an Unknown Person:A Heartbreaking Elegy of a Female s Destiny--On Li Jinfa s Novel "The Trilogy of a Female";
冥婚与盲婚:一曲催人泪下的女性命运悲歌——评李金发小说《一个女性的三部曲》
The police used tear gas to control the riot.
为了控制骚乱，警察使用了催泪瓦斯。
"Webley 1.5" pistol"
威百利吋半口径短催泪枪
The police dispersed the demonstrators with tear gas.
警方用催泪瓦斯驱散示威者。
The police fired tear gas to flush out the terrorists.
警察放催泪弹赶出了恐怖分子
The police used tear gas to subdue the rioters.
警察使用了催泪瓦斯来镇压骚乱分子。
Police used tear gas to disperse the mob .
警察使用催泪弹驱散暴乱。
Police dispersed the rioters with tear gas.
警察用催泪毒气赶散暴乱者。
The impact of the movie reduced them to tears.
影片的感人力量催他们泪下。
The police fire tear-gas shells in an attempt to disperse the crowd.
警察施放催泪弹企图驱散人群。
Police responded with tear gas, pepper spray and water cannon.
警方发放催泪弹、胡椒喷雾和水炮。
The effect of modified dacryocystorhinostomy for chronic dacryocystits
改良泪囊鼻腔吻合术治疗慢性泪囊炎
Study of lacrimal duct probing in the treatment of congenital dacryocystitis
泪道探通术治疗先天性泪囊炎150例
sunken and comminution of the lacrimal fossa or canal, and linear fractures of the canal;
泪囊窝和鼻泪管凹陷性、粉碎性和线性骨折 ;
