I

см. тж. дефект; достоинства и недостатки; серьёзный ~; страдать недостатком; устранять дефект

• The trouble with this hypothesis is that the clouds would have collapsed completely ...

• Unfortunately, there was one flaw in this theory.

• The drawback to this process is that ...

• There are obvious pitfalls in this method.

• The chief drawback (or disadvantage, or shortcoming) of hydrogen is the hazard of fire if ...

• A limitation (or failing, or weakness, or flaw) of this method is that a breakdown at any station stops the entire line.

II

см. тж. восполнять ~; испытывать ~; ликвидировать ~; нехватка

• A deficiency of this vitamin in the diet leads to scurvy.

• The electrode having a deficit of electrons is called the anode.

• Drilling was discontinued because of lack (or shortage, or scarcity) of adequate equipment.