An ion channel is a molecule that allows the passage of electrically charged atoms of sodium, potassium, calcium and so on through the outer membrane of a cell.

离子通道是一种分子，它允许钠、钾、钙等离子经由它通过细胞外膜。

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The water area outside of North Passage is part of the submerged delta in Changjiang estuary, and there is the outlet of the outer navigation channel in North Passage.

长江口北槽口外水域是长江口水下三角洲的组成部分，是长江口深水航道外航道出口段的所在区域。

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The gas lifting system is a narrow system extraordinary, including compressor unit, injection channel, lift valve and lifting passage.

气举系统是一个非常严密的系统，包括压缩机组、注入通道、气举阀和举升通道几个部分。

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Mr Besson said he planned to work with the British government on a common strategy "to reinforce controls and make the passage by the (Channel) Tunnel or port as difficult as possible for illegal immigrants".

BBC: French migrant camp re-examined