Innocuous substance
[化] 无害物质
🧩 词语组成解析
🗣️ 情景例句
Before a long trip I always give my car a safety check.
远行之前，我总是会对车子进行安全检查。
Let me congratulate you on your success.
祝贺您的成功。
A few hours earlier, someone had told the police that thieves would try to steal the diamonds.
数小时以前，有人向警方报告，说有人企图偷走这些钻石。