intense blacksmith forging metal with hammer creating sparks and smoke in dimly lit workshop - 固體 個影片檔及 b 捲影像00:10
mother lovingly feeds her 6.5-month-old daughter her first taste of solid food. the infant baby girl sits in her highchair, showing an uncertain reaction to the mashed bananas - 固體 個影片檔及 b 捲影像00:16
abstract animated geometric shape alpha transparent channel for video transition. looped animation. 4k resolution. - 4k stok video - 固體 個影片檔及 b 捲影像00:05
abstract warm orange and red mesh gradient background with soft fluid ambient light - 固體 個影片檔及 b 捲影像00:20藍色的背景
evidence for molecules and atoms - part 14 of 33. demonstrates that molecules and atoms in solids, liquids, and gases can be proven to exist. five identical appearing liquids react differently, providing evidence of unseen differences in the arrangements - 固體 個影片檔及 b 捲影像00:28
evidence for molecules and atoms - part 10 of 33. demonstrates that molecules and atoms in solids, liquids, and gases can be proven to exist. five identical appearing liquids react differently, providing evidence of unseen differences in the arrangements - 固體 個影片檔及 b 捲影像00:35
lead (ii) iodide precipitate, formed as potassium iodide is dripped into lead (ii) nitrate solution - 固體 個影片檔及 b 捲影像01:00
water phase changes. molecular model of an ice lattice, that melts into liquid water and then evaporates into water vapour (gas) - 固體 個影片檔及 b 捲影像00:21
water phase changes. molecular model of an ice lattice, that melts into liquid water and then evaporates into water vapour (gas) - 固體 個影片檔及 b 捲影像00:18
harbor off the coast of naples / rows of military trucks with mount vesuvius in the distance, a plume of smoke rising from the top / montage of... - 固體 個影片檔及 b 捲影像01:02
abstract warm orange and deep blue mesh gradient background with soft ambient light - 固體 個影片檔及 b 捲影像00:20紅色, 抽象背景, 藍色的背景
abstract animated geometric shape alpha transparent channel for video transition. looped animation. 4k resolution. - 4k stok video 4k stock video - 固體 個影片檔及 b 捲影像00:08
a frozen river curves gracefully through a snow-laden arctic valley, framed by dense evergreen forests and distant snowy mountains under a bright, clear blue sky - calico bluff, alaska - 固體 個影片檔及 b 捲影像00:08
copy space- abstract animated geometric shape alpha transparent channel for video transition. looped animation. 4k resolution. - 4k stok video - 固體 個影片檔及 b 捲影像00:06
adorable asian baby boy eating food from the plate by himself while sitting in high chair home baby milestone, growth and development concept - 固體 個影片檔及 b 捲影像00:33
adorable asian baby boy eating food from the plate by himself while sitting in high chair home baby milestone, growth and development concept - 固體 個影片檔及 b 捲影像00:18
adorable asian baby boy eating food from the plate by himself while sitting in high chair home baby milestone, growth and development concept - 固體 個影片檔及 b 捲影像00:16
3d animation with cutaway illustration of earths layered structure showing inner-outer core, mantle, and crust - 固體 個影片檔及 b 捲影像00:15
evidence for molecules and atoms - part 1 of 33. demonstrates that molecules and atoms in solids, liquids, and gases can be proven to exist. five identical appearing liquids react differently, providing evidence of unseen differences in the arrangements o - 固體 個影片檔及 b 捲影像00:31
aerial view of the solid contact clarifier tank type sludge recirculation in water treatment plant, aerial view water treatment plant for purified water or environment conservation, aerail view of a circle - 固體 個影片檔及 b 捲影像00:15污水
water phase changes. molecular model of an ice lattice, that melts into liquid water and then evaporates into water vapour (gas) - 固體 個影片檔及 b 捲影像00:15格子
water phase changes. molecular model of an ice lattice, that melts into liquid water and then evaporates into water vapour (gas) - 固體 個影片檔及 b 捲影像00:15
the cumbre vieja volcano has continued devastating impact on the spanish island of la palma.ash spewing from the la cumbre volcano forced the local... - 固體 個影片檔及 b 捲影像00:43
