leading
['led.ɪŋ] noun uncountable UK
■the lead (= type of metal) used to cover (parts of) a roof （用于屋顶的）铅皮，铅板
['li:.dɪŋ] adjective [before noun]
IMPROVER
■very important or most important 主要的；顶级的，尖端的•a leading expert on the country's ecology研究该国生态的顶级专家 •the world's leading manufacturer of audio equipment世界顶级音响制造商 |