Tone system
un. 显影系统；显影方式\\n
🧩 词语组成解析
tone
[təun]
n. [语]声调，语调;[画]色调，色泽，明暗;[乐]乐音，全音，全音程;[医]（正常的）健康状态;
vt. 使更健壮;定调;使变调子;[摄影术]给…上色;
vi. 带有某种腔调;呈现某种色彩;（颜色）调和（与 with 连用）;
🗣️ 情景例句
For example, did you know that 1 in 4 teenagers has tried marijuana?
比如，你是否知道4个青少年中就有1位曾经吸过大麻？
This mouse would be delicious.
这只老鼠似乎很是可口。
It was the first joy I had known for years.
我豁然开朗了。这是我多年来第一次感到高兴的事了。