点击下方单词,选择对的这个单词
ph.
1. 封闭;隔离If one object or area is sealed off from another, there is a physical barrier between them, so that nothing can pass between them.
2. - see seal 7
1. impose a blockade on
Synonym: blockade
2. make tightsecure against leakage
e.g. seal the windows
Synonym: seal
多通过句子记忆单词,而不是单独死记硬背。