This helps move the plaque out from under the gum line.
这可以有助于从龈线上刷下菌斑。
This final operation is the"pullback"and installs the line pipe under the river.
这最后的操作叫“拖管”,它使管道就位于河床下面。
Does this item come under your line of business?
我想知道这种产品属您经营的范围吗?
Under this pressure the kids fall in line.
压力之下,孩子们表示同意。
Under this pressure the kids fall in line.
压力之下,孩子们表示同意。
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