Hld
abbr. held (hold的过去式); hold 保持; 同步; 成立
🏥 医学释义
半数致列剂量
🗣️ 情景例句
Your car's very noisy. The muffler must be damaged.
你的车噪音真大，消声器一定出毛病了。
We'll have to check these rates against those charged by other suppliers.
我们必须核查一下由其他供应商提供的费率。
It looks fine to me.
看起来好像没什么问题。