覆盖l

covering up───掩盖，盖住

covering───n.遮盖物，覆盖层；v.遮盖，覆盖（cover的现在分词）

coverings───n.遮盖物（covering的复数）

coveting───vt.垂涎；觊觎；vi.垂涎；觊觎

covetingly───令人垂涎的

hovering───n.停悬；空中悬停；v.徘徊（hover的ing形式）；盘旋

hoveringly───徘徊

covering fire───掩护火力

covering letter───（附于包裹或信件内用于说明或附言的）附信

Please do your best to expedite covering L/C so that we may execute the order smoothly.───请尽最大努力加快开立有关信用证，以便我们顺利执行你们的订单。

Please let us know the color assortment at once and open the covering L/C in our favor.───请即告颜色搭配并开立以我方为受益人的相关信用证。

No problem. Ill have the covering L/C opened as soon as I get back.───没问题。我一回去，就马上安排开立有关信用证。