Harmonograph
谐振记录器
🗣️ 情景例句
But you may rest assured that the payment is guaranteed.
但是你尽可以放心，我们的付款是有保障的。
Necessity and opportunity may make a coward valiant.
需要和机会，可使懦夫变勇敢。
and the existence of underwater features of considerable magnitude.
水下特征差异极大。