<i id="kmcl5"><video id="kmcl5"><th id="kmcl5"></th></video></i>

<i id="kmcl5"><label id="kmcl5"></label></i>

<li id="kmcl5"><wbr id="kmcl5"><div id="kmcl5"></div></wbr></li><li id="kmcl5"><dl id="kmcl5"><strike id="kmcl5"></strike></dl></li>

<dfn id="kmcl5"><input id="kmcl5"></input></dfn>

<var id="kmcl5"></var>

<rp id="kmcl5"></rp><thead id="kmcl5"><tr id="kmcl5"><label id="kmcl5"></label></tr></thead>

<tt id="kmcl5"><thead id="kmcl5"><acronym id="kmcl5"></acronym></thead></tt>

helix

H 開頭單詞 SAT詞匯

柯林斯詞典

helix /?hi?l?ks/ (helixes)

1. N-COUNT A helix is a spiral shape or form. 螺旋形[技術]

劍橋詞典

helix noun [C] (SHAPE)

helical

Your browser doesn't support HTML5 audio

Your browser doesn't support HTML5 audio

<var id="z7gdy"></var>

<thead id="z7gdy"><delect id="z7gdy"></delect></thead>

<big id="z7gdy"><form id="z7gdy"><menu id="z7gdy"></menu></form></big>