講解：
undertake sth
承擔；從事；負責:
University professors both teach and undertake research.
大學教授既要教學又要從事研究工作。

bother doing
花費時間精力(做某事):
Why bother asking if you're not really interested?
如果你不是真的感興趣,干嗎費口舌打聽呢？

fight back (against sb / sth)
奮力抵抗；還擊:
Don't let them bully you. Fight back!
別讓他們欺侮你。要還擊！

be criss-crossed with
構成十字形(或交叉)圖案:
The city is criss-crossed with canals.
這座城市里運河縱橫交錯。

confront sth
使…無法回避；降臨于:
The government found itself confronted by massive opposition.
政府發現自己遭到了強烈的反對。

usher sth in
開創；開始；開啟:
The change of management ushered in fresh ideas and policies.
更換領導班子帶來了新思想和新政策。