If two or more things interlock, they fit into each other so firmly that they hold.

If two or more things如果兩個以上的東西 interlock互相咬合 they fit into each other它們卡進彼此裡面 so firmly that they hold卡得很緊、固定住

Think of puzzle pieces, of fingers pushed together, or of bricks laid so each one sits in the next.

Think of puzzle pieces想想拼圖的拼塊 of fingers pushed together手指交扣在一起 or of bricks laid so each one sits in the next或磚塊一塊接一塊疊起來的樣子

Machines interlock when one part will not move unless another part is in the right place — a door that will not open until a switch is on, for example.

Machines interlock機器之間的連鎖是指 when one part will not move unless another part is in the right place除非另一個部件到位，某個部件就不會動 for example舉例來說 a door that will not open until a switch is on開關沒打開，門就打不開

People stretch it a little for plans or ideas that fit tightly, but the home meaning is physical: they lock into one another, not just sit side by side. It is more precise than “fit” or “join,” and a bit more formal.

People stretch it a little大家有時也會用得寬一點 for plans or ideas that fit tightly指計畫或想法緊密配合 but the home meaning is physical不過本來的意思是實體的 they lock into one another彼此卡住鎖緊 not just sit side by side不只是放在旁邊而已 It is more precise than “fit” or “join,”它比fit或join更精確 and a bit more formal語氣也正式一點

Though actually, you will also hear interlocking as a describing word (interlocking bricks, interlocking fingers); the meaning here is the verb: they fit firmly together.

Though actually不過其實 you will also hear interlocking as a describing word你也會聽到interlocking當形容詞用（interlocking bricks、interlocking fingers） the meaning here is the verb這裡講的是動詞 they fit firmly together指緊緊卡在一起