The cakes were burnt to a cinder.饼烤猵胡了.But he took off his sweater and they began jogging slowly around the cinder track.不过,他还是脱了厚毛衣,两人开始沿煤渣跑道慢慢地晃着跑起来.You've burnt the toast to a cinder , ie so that it is hard and b...
These strands of molecules twine around each other to form cable-like structures.这些分子链彼此缠绕，形成缆线状的结构。The molecules in regular liquids are held together by relatively weak bonds.常规液体里分子之间的键合力相对较弱。There are data on the rate...