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- Higher than required concentration of larvicide or excessive amount of larvicidal oil would not give better result on killing the mosquito larvae. 使用较高浓度的杀幼虫剂或过量的蚊油,并不会增加杀幼虫剂或蚊油的效力。
- Larvicidal oil or larvicide (such as temephos, Bacillus thuringiensis subspecies israelensis etc.) can be applied to stagnant water directly with dosage according to the label instructions. 须直接向积水用蚊油或杀幼虫剂(例如相硫磷、杆菌属亚种苏云金杆菌等),按照标签上所列明的剂量。
- Roadside gullies are cleared manually every two weeks. Larvicidal oil is added afterwards as a precaution against mosquito breeding. 此外,路边的沟渠每两星期以人手清理一次,每次清理后加入灭蚊油,以防蚊子滋生。
- Roadside gullies are generally cleared manually every two weeks. Larvicidal oil is applied on a weekly basis as a precaution against mosquito breeding. 路边的沟渠通常每两星期以人手清理一次,以及每星期加入灭蚊油,以防蚊虫滋生。
- He slicks his hair down with oil every day. 他每天搽油把头梳得光溜溜的。
- The bishop anointed the new king with oil. 主教为新国王登基举行涂油仪。
- The oil tanker soon got out of sight. 油船不久就看不见了。
- The recession trod on the heels of the oil crisis. 经济萧条紧随着石油危机而来。
- Go and get some more oil so we don't run short. 去多弄些油来以免到时候用光了。
- We have found oil under the North Sea. 我们在北海发现了石油。
- Oil feeds into the machine through this tubing. 油经过这个管子流入机器。
- The holed tanker was disgorging oil. 撞了个窟窿的油船正在喷油。
- The oil is leaking out from the crankcase. 没已从曲轴箱中漏出来。
- The plant converts crude oil into gasoline. 这家工厂将原油加工成汽油。
- Half the oil in the lamp had burnt away. 油灯中一半的油已经烧掉了。
- Oil share show modest gain over the week's trading. 石油股票价在上星期的交易中略有上升。
- Mr Smith told me to hold on to my oil shares. 史密斯先生叫我不要卖掉石油股票。
- The gallery has a show of French oil painting. 这个美术馆在展出法国油画。
- Smoke was rolling up from the burning oil up smoke. 正在燃烧的汽油箱上浓烟滚滚。
- An oil well blew out in the oil field. 油田里有一口油井发生井喷。