🧩 词语组成解析
percussive
[[pə'kʌsiv]]
a. 敲击的, 有强大冲击力的, 令人震惊的, 叩诊的
instrument
['ɪnstrəmənt]
n. 仪器;手段，工具;乐器;法律文件;
vt. 用仪器装备;为演奏谱曲;向…提交文书;
in内+stru=struct建立+ment表名词→内部结构→仪器；工具
🗣️ 情景例句
Well, I wasn't clear about my future,
我对自己的未来当时也不清楚，
How much does packing take up of the total cost of the goods?
包装占货物总成本的百分比是多少？
Not at all! Please sit down, Mr. Green. Would you like a cup of tea?
没关系！请坐，格林先生。你喝茶吗？