loads of goods carried on a shoulder pole by an itinerant pedlar; 货郎担
ready to shoulder heavy tasks 勇挑重担
One hundred jin equals one dan [picul] 一百市斤为一担。
two buckets of water (carried on a shoulder pole) 一担水
carry water (with a shoulder pole and buckets) 担水
ready to face any danger; not to be afraid of running risks; 不怕担风险
undertake the responsibility for another; 为别人担责任
牛津高阶第八版
美国韦氏词典
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维基百科 (自由的百科全书)