保证: guarantee, to guarantee, to ensure, to safeguard, to pledge...
商贾: merchant...
口罩: mask (surgical etc)...
积: to amass, to accumulate, to store, measured quantity (such as area of volume), product (the result of multiplication), to integrate (math.), to solve (or integrate) an ordinary differential equatio...
救灾: to relieve disaster, to help disaster victims...
运河: canal...
不得已: to act against one's will, to have no alternative but to, to have to, to have no choice, must...
经常: frequently, constantly, regularly, often, day-to-day, everyday, daily...
复合: complex, compound, composite, hybrid, to compound, to combine...
一锅粥: a pot of porridge, a complete mess...
