旅游的学生们感到那儿的膳宿费是公道的.There travelling students found accommodation at moderate terms.如果房间里有浴室, 一整天的膳宿费为三元.A full day's pension, if one has a room with a bath, will cost about $ 3.他每星期按时缴付三畿尼的膳宿费, 外加洗澡费.He paid his thr...
质子的质量几乎是电子的2,000倍。Protons are nearly 2000 times as heavy as electrons.质子是物质的基本粒子。A proton is an elementary particle of matter.中子和质子构成了原子核.The neutrons and protons form the core of the atom....
Lightfast ink: Ink that will fade less than normal ink on prolonged exposure to strong light.耐光油墨: 在强光照射下,颜色较普通油墨耐久,变淡的程度较低的油墨.Lift the cerebral dura mater to exposure greater superficial petrosal nerve, facial hiatus an...