build * around
圍繞；以 … 為中心
His whole campaign was built around fighting injustice. (他的整個競選活動以打擊不公不義為主軸)
build * in
(通常用被動態) 使成為組成部分
The difficulties seem to be built in. (困難似乎無法避免)
build into +
(通常用被動態) 使成為組成部分；使成為不可分割的一部份
The difficulties are built into the work. (做這項工作必然會碰到困難)
Security has been built into the project. (這項計畫勢必會有安全上的問題)
The rate of pay was built into his contract. (工資率已訂入他的合約)
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