重点讲解：
1. tone down 使(言辞)温和；使(调子)缓和；收敛；
例句：She was trying to tone down the colors of the picture.
她正设法使画面的色调柔和一些L|-#;jJ8_c!pGi。
2. at the same time 同时；
例句：You've got to be firm, but at the same time you must be sympathetic.
你态度要强硬，但还必须有同情心QKlu*HmeBU7*BaP(W。
3. wash away 冲垮；冲走；
例句：He is trying to wash away his sins.
他正试图洗刷他的罪过@FK35R-hykYR_uid。
4. calm down (使)平静下来；(使)镇定下来；
例句：Calm down, you're getting terribly wrought up over nothing.
镇定下来吧，你这样紧张激动，完全是莫名其妙7V3kcWq1eBP3di^T@*。