Deltation
三角翼, 三角洲化, 三角洲形成作用
🗣️ 情景例句
Many advertisements exaggerate the usefulness of the products.
很多广告都夸大了产品的效用。
You think this is funny?
你认为这个很有趣？
so every so often a sample is obtained with a coring bit.
因此时常要用取芯钻头取样。