封锁

blockade;block;seal off;interdict
在50年代和60年代，某些大国先后对中国采取了～或遏制的政策。In the 1950s and60s,certain big powers pursued one after another policies of blockade or containment against China./地形险恶，易遭空袭和～。The extremely difficult terrain is vulnerable to air strike and interdiction./把毒品～起来seal up illegal drugs/实行～ enforce a blockade/解除～lift (or raise)a blockade/执行反介入(海区～)任务carry out anti-access (sea-denial)missions/经济～ economic blockade /～港口blockade a port/～边境close the border;seal off the border/～消息（信息）block the passage (or distribution) of information; news embargo; news blackout; prevent (or block)news leaks;keep people in the dark about