Free alkalinity
[化] 游离碱度
🧩 词语组成解析
free
[fri]
adj. 自由的;免费的;免税的;空闲的;
adv. 免费地;自由地，无拘束地;一帆风顺地;
vt. 免除;释放;使自由;解救;
alkalinity
[ˌælkəˈlɪnɪti]
n. 碱度，碱性;
🗣️ 情景例句
Do we have to pre-book tours, or can we get them on site?
我们必须预定行程， 还是到那个地方再说？
No safe wading in an unknown water.
未知水深浅，涉水有危险。
If you would only try, you could do it.
只要你肯尝试，你一定能做这件事。