Doctrines
n. 教条( doctrine的复数形式 ); 教义; 学说; （政府政策的）正式声明
🗣️ 情景例句
How long will you keep the car?
这车你要用多久？
An idle youth, a needy age.
少壮不努力，老大徒伤悲。
The actual figure was made of copper supported by a metal framework which had been especially constructed by Eiffel.
这座雕像的主体是用铜制成的，由艾菲尔特制的金属框架支撑着。