空

• Three factors falsified his expectations .
  有三个因素使他的希望落了空。
• It is not good to drink on an empty stomach .
  空着肚子喝酒不好。
• Both atria are thinwalled muscular chambers .
  两心房是由薄壁构成的空腔。
• Come and see us again when you are free .
  当你有空时再到我们这儿来坐坐。
• Four-dimensional spacetime defies visualization .
  四维空时难以形象表示。
• We won't sell short and make our fortune .
  我们不搞卖空来发财。
• The theater emptied when the movie ended .
  剧院里的人就走空了。
• Four-dimensional space-time defies visualization .
  四维空时难以形象表示。
• If you can not answer the question , leave a blank .
  如果答不上来就空着。
• It's no better than a hollow stalk .
  那比根空麦秆子好不了多少。