La bel tube
[化] 拉貝耳式管
?? 詞語組成解析
La
[[lɑ:]]
[醫] 鑭(57號元素)
bel
[bel]
n. 貝爾（音量比率的單位）;
??? 情景例句
He's had so many colds and sore throats recently.
他最近常常感冒喉嚨痛。
To have a grandson
有了孫子
The refrigerator is white.
冰箱的顏色是白的。