1.
To the disadvantage of sb.
对某人不利，使某人吃亏
2.
give the case against sb.
作出对某人不利的判决
3.
Bear false witness against sb.
作对某人不利的伪证
4.
(all) grist to [for] one's [the] mill
(某人) 获利, (对某人) 有利
5.
(of events)seem to act together;combine disadvantageously for sb/sth
（指事情）似乎同时发生对某人[某事物]不利
6.
put(sb)at a disadvantage;handicap(sb)unfairly
使（某人）处不利地位;不正当地妨碍（某人）
7.
To put(someone) in a bad position.
使（某人）置身于不利位置
8.
profitable or interesting to sb
对某人有利益或有好处
9.
be advantageous or profitable to(sb)
对（某人）有利或有好处
10.
I will do somebody a good turn and not get found out: If anybody knows of it, it will not count.
我会做对某人有利的事但不能被发现，若有人发现了就不算数。
11.
a person who uses something or someone selfishly or unethically.
自私地或不道德地利用某物或某人地人。
12.
talk cold turkey to/with sb
对 [与]某人直言不讳.
13.
lament a person's absence
对某人不在场感到惋惜
14.
Will they all manage to breach the veil in some way to help Harry defeat his enemy?
他们会不会以某种方式走出帷幔去帮助哈利对抗他的敌人呢？
15.
keep/hold/stand aloof from sb/sth :take no part in sth,show no friendship towards sb
不参与某事物,对某人无友好表示
16.
indemnify a person for an action
保证某人不必对某行为负责
17.
treat sb/sth lightly or casually;toy with sb/sth
轻视或随便对待某人[某事物];心不在焉地考虑或处理某人[某事物
18.
a legal document proving a person's right to property.
证明某人对某财产的拥有权利的合法文件。