1.a heightened state of 處于高度……的狀態(tài)
Although it's a precaution, the police force here in the capital Seoul have moved to a heightened state of alert.
盡管只是預(yù)防措施，韓國(guó)首都首爾的警力已經(jīng)處于高度戒備狀態(tài)xE]8-n^P8e。

2.swell into 膨脹至；擴(kuò)大至
Protests start over fuel price increases, then swell into the largest pro-democracy demonstrations since 1988.
一開(kāi)始引發(fā)抗議的燃油價(jià)格的上漲，后來(lái)竟發(fā)展成為了自從1988年以來(lái)規(guī)模最大的一次民主示威活動(dòng)CRdB#_!qe0K)csk。

3.in the back of one's mind 在某人腦海/心靈深處
Sometimes the incident seemed very close, sometimes far away. But always it lurked in the back of my mind.
這種渴望忽遠(yuǎn)忽近，但始終潛藏在我心靈深處的某個(gè)角落-]^.pp]wke。

4.so far this year 今年以來(lái)
An earthquake scientist said the shift illustrated the huge force of the tremor, the biggest so far this year.
地震專家表示，這證明了此次地震的威力之大，是今年以來(lái)最大一次地震[mwuY4Hf*A|e。