Cut openings in sheets for outlets, vent pipes, flues, etc. to the minimum size necessary.削减开口,为产品的店铺时, 排气管, 烟道等,以最小面积必要的.A plugs, socket - outlets, adaptors and connection units - Part 3: Specification for adaptors.A插头 ...
When food is swallowed, it passed through the pharynx and in the esophagus.食物被咽下, 经过咽进入食道.The accumulation of unswallowed saliva in the pharynx causes the sensation of choking.不能咽下的唾液积聚在咽部引起窒息感.Every turn to weather now ...