cloud是可數名詞嗎

cloud雙語例句：

1、a cloud of chaff, for decoying radar-guided missiles

迷惑雷達制導導彈的'干擾雲

2、The scandals still cloud MCI's reputation.

這則醜聞仍然損害着微波通信公司的聲譽。

3、The night was dark, the stars hidden behind cloud.

那個夜晚很黑，星星躲在雲後面。

4、Another cloud of witnesses compasses me about.

又一羣目擊者把我圍了起來。

5、The American edition of `Cloud Street' is already in its third printing.

美國版《雲街》已是第三次印刷了。