底: bottom; base我: I; my; me书: write到底我们做错了什么: can we figure out what we keep doing wrong; what are we doing wrong刚刚好我想搜集所有我对我底下圣诞树: well hes all i want just for me underneath my christmas tree底物: substrate constant; substratum; zymolyte底纹效果: paint daubs; under painting; underpainting底物;基质: substrate底纹图案: burelage底物标记荧光免疫测定法: subtrate-labeled fluorescent immunoassay底纹: shading底物标记荧光免疫分析: substrate-labelled fluorescent immunoassay底为止: hellip;&hellip底物常数: substrate constant底围: bottom