🧩 词语组成解析
tread
[trɛd]
vi. 踩，踏;行走;交尾;
vt. 踩成;踏出;步行于;踩（烂）;
n. 踏，踩，走;交尾;（楼梯的）踏板;轮胎接触地面的部分;
softly
['sɔftli]
adv. 柔软地;静静地;温和地;柔和地;
🗣️ 情景例句
It's on the house.
这是免费的。
Pleasure has a sting in its tail.
乐中必有苦。
When it did so, it sent sparks down to the ground and these immediately started a fire.
当它这样做时，把火花送到了地面，这些火花立刻引起了一场大火。