watertight blockade的用法和樣例：
例句
- His orders were to blockade the city into submission, starve the defenders or wipe them out.
他的命令要求嚴密封鎖這座城市，使之不戰而降，餓死或消滅它的保護者。 - 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.
在查爾斯頓港被北方炮艇嚴密封鎖以後，威爾明頓成了封鎖線貿易的主要港口，而那裡的情況早已臭名昭著了。
