watertight blockade的用法和样例：
例句
- His orders were to blockade the city into submission, starve the defenders or wipe them out.
他的命令要求严密封锁这座城市，使之不战而降，饿死或消灭它的保护者。 - Conditions in Wilmington , the chief blockade port, now that Charleston's port was practically sealed by the Yankee gunboats, had reached the proportions of an open scandal.
在查尔斯顿港被北方炮艇严密封锁以后，威尔明顿成了封锁线贸易的主要港口，而那里的情况早已臭名昭著了。
