The pit is being shut down because it no longer has enough coal that can be mined economically.

　　那個(gè)煤礦要關(guān)閉了，因?yàn)閮?chǔ)量不足，難以經(jīng)濟(jì)開采。

　　They can disable communications satellites and shut down power systems.

　　它們能使通信衛(wèi)星失效并關(guān)閉電力系統(tǒng)。

　　Factories that gave out harmful gases were all shut down after the policy came into effect.

　　在政策生效之后，所有排放有害氣體的工廠都關(guān)閉了。

　　Local governments in some areas were forced to shut down schools temporarily to use them as store houses.

　　一些地區(qū)的地方政府被迫暫時(shí)關(guān)閉學(xué)校，將其用作倉庫。