Cash is a banker's stock in trade but it earns nothing and costs him a great deal to store, safeguard and transport, so he will keep as little of it as he can.

现金是银行的备用金，没有任何收益，还要花费很大的代价去贮存，保管和运送，因此，银行尽可能保留极少的现金。

youdao

Station management units shall formulate operation management instructions, safeguard operation order within public transport stations and ensure security and smoothness.

场站管理单位应当制定运营管理制度，维护公共交通场站内的运营秩序，保障安全畅通。

youdao

Although many infrastructure projects are being placed in private hands, the government is pushing through reform bills designed to safeguard transport, telecoms and water services.

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