相片给素色的墙面增添了一抹情趣。Pictures add interest to plain painted walls.靠垫给房间添了一抹亮色，不然房间看上去可能太素净了。The cushions add a touch of colour in a room that might otherwise look severe.他们订购了一些绿色植物，以给盖伊医院的新配楼增添一抹亮色。They have ordered a bit of...
They interceded with the authorities on behalf of the detainees.他们为被拘留者向当局求情。He gave witness on behalf of an accused person.他为被告作证.She gave witness on behalf of the accused person.她替被告作证....
This may help to maintain the gains you've made and to prevent backsliding.这或许有助于保持你所取得的进展，防止倒退。This means that the system only improves, always notching forward, never backsliding.这意味着系统只能够被改进, 总是向前的, 从不会倒退.And the...