他偷偷地瞄了一下两名侦探面无表情的脸孔。He glanced furtively at the stolid faces of the two detectives.那张毫无表情的脸看上去深沉而又神秘。That expressionless face had seemed deep and mysterious.她有一双极富表情的眼睛。She has wonderfully expressive eyes....
对光学开关的这种研究,可能使我们把完整的光路制成微型的光路板.The research on optical switches may lend to complete optical circuits on miniature circuit boards.这些材料对于生产微型的燃料电池是非常重要的.Those materials are essential to the working of the micro fuel cell....
他即席创作了一首足球队胜利之歌.He improvised a song about the football team's victory.她的自白简直等于一篇即席说明.Her confession was simply tantamount to a casual explanation.她即席做了这些评价.She had made these remarks offhandedly....