Toughest
a. 最堅強的；最堅韌的；最粗暴的；最苛刻的（tough的最高級）
??? 情景例句
She complained, with reason, that she had been underpaid.
她抱怨她的工資一直很低，這也不無道理。
You can stay assured that shipment will be effected according to the contract stipulation.
你盡管放心，我們將按合同規(guī)定如期裝船。
The price just covers the cost.
這個價格正好抵消成本。