Pehameter
[化] pH计
🗣️ 情景例句
Look before you leap.
三思而后行。
I meet the boy whose aunt is a reporter.
我遇到那个男孩的姑妈是记者。
When a marked bee returned to the hive from the feeding table, Von Frisch watched through the glass.
当一只有记号的蜜蜂从喂食桌回到蜂箱时。