Back weld
[化] 封底焊道
🧩 词语组成解析
back
[bæk]
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
weld
[wɛld]
vt.& vi. 焊接;使紧密结合;
n. 焊接点;黄色植物染料;
🗣️ 情景例句
and I think he believes
而我认为他相信
When an opportunity is neglected, it never comes back to you.
机不可失，时不再来。
stranger still, by moving her elbow over a child's game of Lotto she was able to describe the figures and colours printed on it;
更为奇怪的是，她把肘部在儿童玩的“罗托”纸牌上移动一下，便能说出印在纸牌上的数字和颜色。