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VERB
增強（信心）；鼓舞（士氣）
If you bolster something such as someone's confidence or courage, you increase it.
例句
Hopes of an early cut in interest rates bolstered confidence.
利率有望早日下調，從而增強了人們的信心。
...a number of measures intended to bolster morale.
旨在鼓舞士氣的一些措施
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VERB
鞏固（地位）；加強
If someone tries to bolster their position in a situation, they try to strengthen it.
例句
Britain is free to adopt policies to bolster its economy.
英國可以自由制定政策以振興經濟。
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N-COUNT
（墊在普通枕頭下的）長枕，墊枕
A bolster is a firm pillow shaped like a long tube which is sometimes put across a bed under the ordinary pillows.