Acid-base indicator

acid ['æsɪd]

adj. 酸味的;尖刻的;酸的;酸性的; n. <化>酸;酸味物质;

acid尖，酸，锐利 →酸；酸的，酸性的

base [bes]

n. 基础;基地;根据;基数（如十进制的10 和二进制的2）; vt. 基于;把…建立在;把…放在或设在（基地）;把…置于底座（或基座）上; adj. 卑鄙的;低级的;贱的，劣的;庶生的;

bas,base 表示”低下,基础”

indicator ['ɪndɪketɚ]

n. 指示器;[化]指示剂;指示者;

and lays them face up on this stand.

将它们掀开放在这个架子上。

Poison is poison though it comes in a golden cup.

纵然装入金杯，毒药还是毒药。

Undivided attention is another sign of respect. You may have noticed that very few people listen with complete attention. Most people half-listen, and if you ask them to repeat what you have just said, they cannot. They may appear to be listening, but i

“专一”是尊重对方的另一表现。你也许察觉到很少有人一心一意地听别人讲话。多数人只是半心半意地听。如果你请他们复述你刚才说过的话，他们是不可能复述出来的。他们可能看上去是在听着，但是事实上有许多事情在他们头脑里转来转去--购物清单呀，要做的事呀，令人烦恼的事?2274