It is illustrative of British embarrassment that I feel awkward just typing the three letter word S-E-X.
单单把这个字的三个字母（S-E-X）打出来，我就已经想钻地洞了，现在你知道英国人有多容易尴尬了吧。
3
Film thickness measurements, bicrystal X-ray diffraction experiments and surface and cross-sectional micro-photographs taken by S. E. M. for epitaxial films are also discussed.