这位血友病患者必须特别小心避免任何可能的伤口。

The ___bleeder needs to be extremely careful to prevent any potential cuts.

修车师傅拧开排气阀释放了刹车系统中的空气。

The mechanic turned the ___bleeder valve to release air from the brake system.

别总当个软柿子，学会拒绝那些想占你便宜的人。

Stop being such a ___pushover and learn to say no to people who take advantage of you.