When not removed, plaque causes tooth decay and gum disease.牙斑如果不清除就会导致牙齿蛀蚀和牙龈疾病。There are problems of urban decay and gang violence.存在城市衰败和帮派暴力的问题。The phosphate was deposited by the decay of marine microorganisms.海洋微生物腐...
他按下按钮启动马达的时候保险丝烧断了。The fuse blew as he pressed the button to start the motor.机器老是卡住,马达隔不了几分钟就突然熄火。Every few minutes the motor cut out as the machinery became jammed.我们重新启动马达,沿河而下。Restarting the engine, we motored downriv...
a diagram representing a cross section of the human eye表现人眼的剖面图The tephigram is a thermodynamic particularly suitable for representing atmospheric processes.温熵图是一种热力学图,特别适合于描述大气过程.Draw a figure as accurately as possible ...
Chlorine is used to disinfect water...氯用来给水消毒。Plough deeply in 30cm, and insolate in the sun to disinfect.深耕30厘米,曝晒日光消毒。Disinfect the wound before you bandage it up.伤口包扎之前应先消毒.Chlorine is used to disinfect water.氯用来给水消毒。...