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1.We used to see a lot of malaria at the Wangpha clinic but now with efforts of elimination and active surveillance...
used to过去一向，过去时常
They used to buy ten kilos of beef in one lump.
他们过去常买10公斤重的整块牛肉。
2.Drug-resistant means that the drug no longer treats the disease.
no longer不再，已不
After a time it was no longer a discomfort.
过了一阵，也就不以为苦了。
3.He says that the clock is ticking, meaning time is running out.
run out用完；耗尽
Time is running out fot the trapped miners.
被困矿工的时间不多了。
