be at low-water mark的用法和樣例：
例句
- At that time we were pressed for money.
那時我們手頭拮据。 - Fees may be reduced or waived in cases of financial hardship.
如病人有經濟困難，這些費用可予減收或豁免。 - There will be a relief scheme to help those who face problems in repaying housing loans obtained from the government.
一項解困計劃將協助經濟困難而無法償還政府貸款的業主，在星期四開始推出。
