In a job interview, you may have experienced an interviewer's flat affect and forced smile rather than a warm welcome that would have put you at ease.
在面试的时候，考官要求你微笑，而不是热情欢迎你的到来，让你放松。
Flat sheet dies are heated with electrical resistance cartridge heaters placed in holes drilled in areas carefully selected so as to avoid localized hot spots which would affect melt flow uniformity.
平板模具受筒式电热管加热，这种电热管安装在精选的钻孔中，以避免所在的热熔点影响熔体流动的均匀性。
In generalized vitiligo, the patchy white areas are often symmetrical, flat, have definite borders, and may affect or spread to any part of the body.
广义白癜风，白色的片状领域往往是对称的，平坦，有一定的边界，并可能影响到或扩散到身体的任何部位。
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