啤酒倒出时会起泡沫.Beer froths when it is poured out.看上去好像一大片起泡沫的污水.It looked full of billowing dirty washing.肥皂在海水里不起泡沫.Soap will not lather in sea - water....
Sloping walls on the bulk of the building create an optical illusion.大楼主体的斜墙给人造成一种视错觉。The camera combines rugged reliability with unequalled optical performance and speed.这款相机既坚固耐用，又有超凡的光学性能和快门速度。These optical fibres may...
These differences are connected with the strong absorption of the composite projectiles.这些差别与复杂的入射粒子的强烈吸收有关.Projectiles became more important because cannons could now fire balls over hundreds or yards.抛射体变得更加重要,因为人们已能用大...
The glass ( ie atmospheric pressure ) is falling.气压在下降.Atmospheric nuclear tests are now banned by an international treaty.在大气层中进行核试验现在已被一项国际条约所禁止。the outermost atmospheric layer大气层中最外面的一层...atmospheric gases.大气中的气体He re...