1. 词链儿：come and go 来来去去；时有时无；忽隐忽现
They were able to come and go at will.
他们能够来去自由。
The pain comes and goes.
疼痛时断时续。
2. 词链儿：burn sth up 烧光/烧尽；耗尽
Most of the woodland has now been burnt up.
现在大多数林地都被烧光了。
拓展词链儿：burn sb up 使〔某人〕十分愤怒
The way he treats her really burns me up.
他那样对待她实在让我很恼火。
burn相关词链儿：
burn your boats/bridges 自断退路；破釜沉舟
burn a hole in sb's pocket 钱在口袋里留不住，一有钱就想花
burn the midnight oil 熬夜工作
burn the candle at both ends 劳累过度
burn yourself out 把（自己）累垮
get/have your fingers burnt （因错误决定而）吃亏，蒙受损失
be burnt up with jealousy and suspicion 妒火中烧，满腹狐疑
burn off/up excess calories 消耗多余热量
★影视原声视频：
You've been burning the candle at both ends lately. Go get some rest.
你最近太劳心劳力了。去好好休息一下。
影视片段《星际迷航》
★影视原声视频：
I'm burning the candle at both ends and the middle.
我忙得不可开交。
影视片段《死亡医师 Dr. Death》
★影视原声视频：
Maybe I can burn off my excess energy.
这样可以消耗我过旺的精力。
影视片段《好汉两个半》
3. 词链儿：do XX in vain/XX be in vain 徒劳地；枉然地；无用地
I tried in vain to start a conversation.
我极力想挑起话头，但没有成功。
All our efforts were in vain.
我们的所有努力都付诸东流了。
